Shop All Microscopy Reagents

ProLong™ Gold Antifade Mountant with SYTOX™ Deep Red Invitrogen™

ProLong Gold Antifade Mountant is a liquid mountant applied directly to fluorescently labeled cell or tissue samples on microscope slides. It is formulated without DNA stain or with the blue DNA stain DAPI or with the deep red DNA stain SYTOX Deep Red. ProLong Gold mountant contains chemical components designed to protect fluorescent dyes from fading (photobleaching) during fluorescence microscopy experiments, and delivers this protection without significantly quenching the initial fluorescence signal. It is a curing mountant that forms a near-perfect optical path (1.47 RI) and allows longer-term storage of the sample. It comes ready-to-use (room temperatures storage and no mixing required)—just apply a drop to the sample, add a coverslip, cure, and image.

ProLong Gold Antifade Mountant is not recommended for mounting samples containing fluorescent proteins, such as GFP. For superior antifade protection of fluorescent proteins and fluorescent dyes, ProLong Diamond Antifade Mountant is recommended. Learn more about key differences between ProLong Gold and ProLong Diamond antifade mountants.

Key Attributes:

• Protects dyes from fading during imaging
• Ready-to-use liquid that cures for longer-term storage
• Mounted samples are stable for months
• Maintains fluorescence signal—little to no quenching
• Ideal for Alexa Fluor dyes

For mountants with 1.52 refractive index, optimized for oil immersion objective imaging, try curing mountant Prolong Glass Antifade Mountant or non-curing SlowFade Glass Soft-set Antifade Mountant.

ProLong Gold Antifade Mountant comes already mixed and ready to use in a dropper bottle or 10-mL bottle with or without DNA stain. DAPI stain is excited by UV light at 360 nm when bound to DNA, with an emission maximum at 460 nm, and is detected using a DAPI traditional filter. SYTOX Deep Red stain is excited by red light at 660 nm when bound to DNA, with an emission maximum at 682 nm, and is detected using a Cy5/deep red traditional filter.

Get Photobleaching Protection Without Quenching
Many mountants can destroy initial fluorescence signal strength by up to 80%. To create the Molecular Probes Gold series of mountants, our scientists developed a formula of chemical additives that minimize this initial signal quenching for the broadest range of colors and dyes.

Stable Signals During Imaging and for Longer-Term Storage
While epoxy-based mountants used in our FluoCells series of prepared cells can be stable for years and afford the highest level of antifade protection, they are difficult to use, requiring a series of steps in organic solvents prior to mounting. ProLong Gold Antifade Mountant is the next-best option for archiving samples. And it is the best option for preserving signal strength during prolonged imaging sessions, such as repeated scanning under confocal laser scanning illumination. It's easy to use—just air-dry your stained samples to remove excess water and mount. For immediate viewing of the sample, choose our non-curing mountant, SlowFade Gold Antifade Mountant.

Achieve Excellent Refractive Index Matching Without Acrylic Resins
For modern high-resolution imaging applications, refractive index matching is critical. ProLong Gold Antifade Mountant will cure to an Rf of 1.47. Additionally, the curing property means you can avoid messy acrylic resins (i.e., finger nail polish), which can damage or ruin modern microscope objectives if it comes into contact with them.

CytoVista™ Blocking Buffer Invitrogen™

CytoVista Blocking Buffer is used to block non-specific signal while performing immunohistochemistry (IHC) or immuno-labeling with tissue or 3D cell cultures. This buffer consists of PBS with 0.2% Triton X-100, 6% donkey serum, and 10% DMSO. It helps enable sharp and bright images at any depth of tissue or 3D cell culture when used with other CytoVista products.

Learn more about CytoVista 3D Culture Clearing reagents ›

Features of the CytoVista family of tissue and 3D cell culture clearing reagents include:
• Rapid clearing of fluorescently labeled tissue for 3D imaging
• Minimal shrinkage, expansion, or other morphological changes to tissue
• Simple workflow does not require any special instruments or equipment and is easily adapted to IHC
• Compatible with most fluorophores, including dyes and fluorescent proteins

The CytoVista tissue and 3D cell culture clearing workflow clears tissue or 3D cultured cells with minimal changes to morphology or the sensitivity of detection with almost any fluorophore. With an easy-to-use protocol, whole mouse brain (8-mm section) can be cleared in 24 hours, or a 1-mm section in 2 hours, without the use of any special instruments or equipment.

The CytoVista clearing workflow is compatible with most fluorophores, including fluorescent proteins that are detected with common fluorescent imaging instruments, such as wide-field microscopes, high content analyzers, confocal microscopes, and lightsheet microscopes. For first time users, we recommend the CytoVista Tissue Clearing/Staining Kit (Cat No V11324) or CytoVista 3D Cell Culture Clearing/Staining Kit (Cat No. V11325). These kits contain all necessary reagents for both clearing and IHC staining.

CytoVista clearing technology sufficiently clears tissue for 3D fluorescent imaging, but unlike other clearing techniques does not significantly changes the tissue morphology. Minimal morphological changes, such as shrinkage and contraction, have been observed. For precious samples, the clearing can be reversed, and the tissue can be processed for histology studies, like H&E staining.

For tissues that are easier to clear, like brain, lung, intestine, skin, and tissues of less than 250-µm thickness, treatment with CytoVista Tissue Clearing Reagent is sufficient for 3D imaging. However, tissues of more than 250-µm thickness or that are hard to clear like kidney, liver, heart, and placenta will require an initial treatment with CytoVista Tissue Clearing Reagent followed by treatment with CytoVista Tissue Clearing Enhancer.

CytoVista 3D Cell Culture Clearing Reagent is recommended for spheroids or organoids up to 1 mm in thickness.

For hard tissues like bone, cartilage, and connective tissue, CytoVista Tissue Clearing Reagent is not recommended.

ProLong™ Diamond Antifade Mountant with SYTOX™ Deep Red Invitrogen™

ProLong Diamond Antifade Mountant is a glycerol-based liquid mountant applied directly to fluorescently labeled cells or tissue samples on microscope slides. It is formulated without DNA stain or with the blue DNA stain DAPI or with the deep red DNA stain SYTOX Deep Red. ProLong Diamond mountant is designed to provide unparalleled antifade protection across the entire visual and IR spectrums. You can use ProLong Diamond mountant with almost any fluorescent dye or fluorescent protein (e.g., GFP, RFP, mCherry) to achieve the brightest signal and lowest background, for bright, high definition fluorescent images.

Features of ProLong Diamond Antifade Mountant include:
• Protects fluorescent dyes and fluorescent protein from fading, across entire visible and IR spectrums
• Ready-to-use liquid that cures for longer-term storage
• Ideal for Alexa Fluor and traditional dyes, such as FITC and Cy3, and fluorescent proteins like GFP, RFP, and mCherry
• Mounted samples are stable for months
• Maintains fluorescence signal—little to no quenching

Learn more about ProLong Antifade mountants.

For mountants with 1.52 refractive index, optimized for oil immersion objective imaging, try curing mountant Prolong Glass Antifade Mountant or non-curing SlowFade Glass Soft-set Antifade Mountant.

ProLong Diamond Antifade Mountant comes already mixed and ready to use in a dropper bottle or 10-mL bottle with or without DNA stain. DAPI stain is excited by UV light at 360 nm when bound to DNA, with an emission maximum at 460 nm, and is detected using a DAPI traditional filter. SYTOX Deep Red stain is excited by red light at 660 nm when bound to DNA, with an emission maximum at 682 nm, and is detected using a Cy5/deep red traditional filter. Just apply a drop to the sample, add a coverslip, cure, and image. ProLong Diamond mountant is a curing mountant that forms a near-perfect optical path (1.47 RI) and enables longer-term storage of your samples, while protecting them from photobleaching. ProLong Diamond mountant does not discolor or shrink when cured and stored long term, making it possible to take high quality fluorescent images weeks or even months after mounting the slides.

Get Photobleaching Protection Across the Entire Visible and IR Spectrums
No matter which fluorescent dyes or fluorescent proteins you are using, ProLong Diamond mountant helps provide superior protection against photobleaching. It is proven to have best-in-class performance with a wide array of fluorescent dyes, including Alexa Fluor dyes, FITC, TRTC, Texas Red, Cy3, and Cy5. ProLong Diamond mountant does not quench fluorophores, and its ability to provide brighter signal, against no background, helps ensure that you get the best-quality, high resolution images for publishing.

Stable Signals During Imaging and for Longer-term Storage
ProLong Diamond mountant is the ideal option for archiving samples with fluorescent dyes or fluorescent proteins. It is also an ideal option for preserving signal strength during prolonged imaging sessions, such as repeated scanning under confocal laser scanning illumination, or with super resolution microscopy. And it's easy to use—simply remove excess water from the stained sample and mount. For immediate viewing of the sample, choose our non-curing mountant, SlowFade Diamond Antifade Mountant.

Achieve Excellent Refractive Index Matching for Crisp Images
For modern high-resolution imaging applications, refractive index (RI) matching is critical. ProLong Diamond mountant will cure to an RI of 1.47. Additionally, this curing property means you do not need to use messy acrylic resins (i.e., finger nail polish), which can damage or ruin modern microscope objectives if it comes into contact with them.

CytoVista™ Antibody Penetration Buffer Invitrogen™

CytoVista Antibody Penetration Buffer helps primary and secondary antibodies penetrate the cells of tissue or 3D cell culture when performing immunohistochemistry (IHC) or immuno-labeling. This buffer consists of PBS with 0.2% Triton X-100, 0.3 M glycine, and 20% DMSO. It helps enable sharp and bright images at any depth of tissue or 3D cell culture when used with other CytoVista products.

Learn more about CytoVista 3D Culture Clearing reagents ›

Features of the CytoVista family of tissue and 3D cell culture clearing reagents include:
• Rapid clearing of fluorescently labeled tissue for 3D imaging
• Minimal shrinkage, expansion, or other morphological changes to tissue
• Simple workflow does not require any special instruments or equipment and is easily adapted to IHC
• Compatible with most fluorophores, including dyes and fluorescent proteins

The CytoVista tissue and 3D cell culture clearing workflow clears tissue or 3D cultured cells with minimal changes to morphology or the sensitivity of detection with almost any fluorophore. With an easy-to-use protocol, whole mouse brain (8-mm section) can be cleared in 24 hours, or a 1-mm section in 2 hours, without the use of any special instruments or equipment.

The CytoVista clearing workflow is compatible with most fluorophores, including fluorescent proteins that are detected with common fluorescent imaging instruments, such as wide-field microscopes, high content analyzers, confocal microscopes, and lightsheet microscopes. For first time users, we recommend the CytoVista Tissue Clearing/Staining Kit (Cat No V11324) or CytoVista 3D Cell Culture Clearing/Staining Kit (Cat No. V11325). These kits contain all necessary reagents for both clearing and IHC staining.

CytoVista clearing technology sufficiently clears tissue for 3D fluorescent imaging, but unlike other clearing techniques does not significantly changes the tissue morphology. Minimal morphological changes, such as shrinkage and contraction, have been observed. For precious samples, the clearing can be reversed, and the tissue can be processed for histology studies, like H&E staining.

For tissues that are easier to clear, like brain, lung, intestine, skin, and tissues of less than 250-µm thickness, treatment with CytoVista Tissue Clearing Reagent is sufficient for 3D imaging. However, tissues of more than 250-µm thickness or that are hard to clear like kidney, liver, heart, and placenta will require an initial treatment with CytoVista Tissue Clearing Reagent followed by treatment with CytoVista Tissue Clearing Enhancer.

CytoVista 3D Cell Culture Clearing Reagent is recommended for spheroids or organoids up to 1 mm in thickness.

For hard tissues like bone, cartilage, and connective tissue, CytoVista Tissue Clearing Reagent is not recommended.

CytoVista™ Tissue Imaging Chamber, 7 mm deep Invitrogen™

The CytoVista Tissue Imaging Chamber can be used when imaging fluorescently stained tissue or 3D cell culture. Simply mount this chamber on your microscope slide. These chambers are made of silicon and are chemically inert, and so are resistant to any clearing reagent. After fluorescently labeling and clearing tissue or 3D cell culture, place the specimen in this chamber along with imaging solution. Then place a coverslip on top and you are ready to image.

Learn more about CytoVista 3D Culture Clearing reagents ›

Features of the CytoVista family of tissue and 3D cell culture clearing reagents include:
• Rapid clearing of fluorescently labeled tissue for 3D imaging
• Minimal shrinkage, expansion, or other morphological changes to tissue
• Simple workflow does not require any special instruments or equipment and is easily adapted to IHC
• Compatible with most fluorophores, including dyes and fluorescent proteins

The CytoVista tissue and 3D cell culture clearing workflow clears tissue or 3D cultured cells with minimal changes to morphology or the sensitivity of detection with almost any fluorophore. With an easy-to-use protocol, whole mouse brain (8-mm section) can be cleared in 24 hours, or a 1-mm section in 2 hours, without the use of any special instruments or equipment.

The CytoVista clearing workflow is compatible with most fluorophores, including fluorescent proteins that are detected with common fluorescent imaging instruments, such as wide-field microscopes, high content analyzers, confocal microscopes, and lightsheet microscopes. For first time users, we recommend the CytoVista Tissue Clearing/Staining Kit (Cat No V11324) or CytoVista 3D Cell Culture Clearing/Staining Kit (Cat No. V11325). These kits contain all necessary reagents for both clearing and IHC staining.

CytoVista clearing technology sufficiently clears tissue for 3D fluorescent imaging, but unlike other clearing techniques does not significantly changes the tissue morphology. Minimal morphological changes, such as shrinkage and contraction, have been observed. For precious samples, the clearing can be reversed, and the tissue can be processed for histology studies, like H&E staining.

For tissues that are easier to clear, like brain, lung, intestine, skin, and tissues of less than 250-µm thickness, treatment with CytoVista Tissue Clearing Reagent is sufficient for 3D imaging. However, tissues of more than 250-µm thickness or that are hard to clear like kidney, liver, heart, and placenta will require an initial treatment with CytoVista Tissue Clearing Reagent followed by treatment with CytoVista Tissue Clearing Enhancer.

CytoVista 3D Cell Culture Clearing Reagent is recommended for spheroids or organoids up to 1 mm in thickness.

For hard tissues like bone, cartilage, and connective tissue, CytoVista Tissue Clearing Reagent is not recommended.

Endogenous Biotin-Blocking Kit Invitrogen™

The Endogenous Biotin-Blocking Kit provides a method and reagents for a pretreatment that reduces or eliminates background signals when biotin-avidin or biotin-streptavidin detection systems are used to identify cellular targets.

The Endogenous Biotin-Blocking Kit offers:
• Improved results—increased signal-to-noise ratio facilitates cell target identification
• Ease of use—pipette-free dropper bottle offers speed and convenience
• Fast—endogenous background reduction in under an hour
• Flexibility—the kit can be used to help improve results from conventional immunohistochemistry, immunocytochemistry, RNA FISH, and ELISA procedures

Biotin occurs naturally, functioning as an enzyme cofactor in the cytosol and mitochondria of a wide variety of cell types. The Endogenous Biotin-Blocking Kit minimizes interference from the endogenous biotin found in enzymes of mammalian cells and tissues, through a two-step blocking strategy. First, an excess of unlabeled streptavidin is added to the specimen to bind endogenous biotin-rich enzymes. The streptavidin is subsequently blocked with an excess of unlabeled biotin, effectively rendering the cell or tissue sample free of available biotin-binding sites.

Avidin/Biotin Blocking Kit

This kit is used to block endogenous biotin or biotin-binding activity in tissue sections. The kit contains 18 mL each of Avidin and Biotin solutions.

CytoVista™ 3D Cell Culture Clearing Reagent Invitrogen™

CytoVista 3D Cell Culture Clearing Reagent clears fluorescently labeled 3D cultured cells such as organoids and spheroids. This clearing process enables sharp and bright 3D fluorescent imaging for depths up to 1000 µm. The reagent can also be used as an imaging solution with stable storage of 3D cell cultures for weeks with minimal change in tissue morphology or brightness, or specificity of the fluorophores.

Learn more about CytoVista 3D Culture Clearing reagents ›

Features of the CytoVista family of tissue and 3D cell culture clearing reagents include:
• Rapid clearing of fluorescently labeled tissue for 3D imaging
• Minimal shrinkage, expansion, or other morphological changes to tissue
• Simple workflow does not require any special instruments or equipment and is easily adapted to IHC
• Compatible with most fluorophores, including dyes and fluorescent proteins

The CytoVista tissue and 3D cell culture clearing workflow clears tissue or 3D cultured cells with minimal changes to morphology or the sensitivity of detection with almost any fluorophore. With an easy-to-use protocol, whole mouse brain (8-mm section) can be cleared in 24 hours, or a 1-mm section in 2 hours, without the use of any special instruments or equipment.

The CytoVista clearing workflow is compatible with most fluorophores, including fluorescent proteins that are detected with common fluorescent imaging instruments, such as wide-field microscopes, high content analyzers, confocal microscopes, and lightsheet microscopes. For first time users, we recommend the CytoVista Tissue Clearing/Staining Kit (Cat No V11324) or CytoVista 3D Cell Culture Clearing/Staining Kit (Cat No. V11325). These kits contain all necessary reagents for both clearing and IHC staining.

CytoVista clearing technology sufficiently clears tissue for 3D fluorescent imaging, but unlike other clearing techniques does not significantly changes the tissue morphology. Minimal morphological changes, such as shrinkage and contraction, have been observed. For precious samples, the clearing can be reversed, and the tissue can be processed for histology studies, like H&E staining.

For tissues that are easier to clear, like brain, lung, intestine, skin, and tissues of less than 250-µm thickness, treatment with CytoVista Tissue Clearing Reagent is sufficient for 3D imaging. However, tissues of more than 250-µm thickness or that are hard to clear like kidney, liver, heart, and placenta will require an initial treatment with CytoVista Tissue Clearing Reagent followed by treatment with CytoVista Tissue Clearing Enhancer.

CytoVista 3D Cell Culture Clearing Reagent is recommended for spheroids or organoids up to 1 mm in thickness.

For hard tissues like bone, cartilage, and connective tissue, CytoVista Tissue Clearing Reagent is not recommended.

CytoVista™ 10X Wash Buffer Invitrogen™

CytoVista 10X Wash Buffer is used in wash steps when performing immunohistochemistry (IHC) or immuno-labeling with tissue or 3D cell culture. This buffer is 10X concentrated and should be diluted to 1X with PBS before use. It consists of PBS with 0.2% Tween-20 and 10 µg/mL heparin and helps enable sharp and bright images at any depth of tissue or 3D cell culture when used with other CytoVista products.

Learn more about CytoVista 3D Culture Clearing reagents ›

Features of the CytoVista family of tissue and 3D cell culture clearing reagents include:
• Rapid clearing of fluorescently labeled tissue for 3D imaging
• Minimal shrinkage, expansion, or other morphological changes to tissue
• Simple workflow does not require any special instruments or equipment and is easily adapted to IHC
• Compatible with most fluorophores, including dyes and fluorescent proteins

The CytoVista tissue and 3D cell culture clearing workflow clears tissue or 3D cultured cells with minimal changes to morphology or the sensitivity of detection with almost any fluorophore. With an easy-to-use protocol, whole mouse brain (8-mm section) can be cleared in 24 hours, or a 1-mm section in 2 hours, without the use of any special instruments or equipment.

The CytoVista clearing workflow is compatible with most fluorophores, including fluorescent proteins that are detected with common fluorescent imaging instruments, such as wide-field microscopes, high content analyzers, confocal microscopes, and lightsheet microscopes. For first time users, we recommend the CytoVista Tissue Clearing/Staining Kit (Cat No V11324) or CytoVista 3D Cell Culture Clearing/Staining Kit (Cat No. V11325). These kits contain all necessary reagents for both clearing and IHC staining.

CytoVista clearing technology sufficiently clears tissue for 3D fluorescent imaging, but unlike other clearing techniques does not significantly changes the tissue morphology. Minimal morphological changes, such as shrinkage and contraction, have been observed. For precious samples, the clearing can be reversed, and the tissue can be processed for histology studies, like H&E staining.

For tissues that are easier to clear, like brain, lung, intestine, skin, and tissues of less than 250-µm thickness, treatment with CytoVista Tissue Clearing Reagent is sufficient for 3D imaging. However, tissues of more than 250-µm thickness or that are hard to clear like kidney, liver, heart, and placenta will require an initial treatment with CytoVista Tissue Clearing Reagent followed by treatment with CytoVista Tissue Clearing Enhancer.

CytoVista 3D Cell Culture Clearing Reagent is recommended for spheroids or organoids up to 1 mm in thickness.

For hard tissues like bone, cartilage, and connective tissue, CytoVista Tissue Clearing Reagent is not recommended.

Prionics™ Evans Blue Counterstain

Counterstain for immunofluorescence staining with FITC labeled antibodies.

Image-iT™ Plant Tissue Clearing Reagent Invitrogen™

Image-iT Plant Tissue Clearing Reagent is used to render whole-plant tissue optically clear for imaging. Image-iT Plant Tissue Hard-Set Mountant can then be used to mount and preserve the optically cleared whole-plant tissue for imaging, storage, and archiving. These reagents are compatible with both fluorescence-based and colorimetric-based applications. Image-iT Plant Tissue Clearing Reagent is an effective replacement for chloral hydrate, traditionally used to clear plant tissues in botanical microscopy.

Features of Image-iT Plant Tissue Clearing Reagent include:
• Clears plant tissue for whole-specimen imaging
• Soft-set mountant for imaging with refractive index of 1.45
• Effective replacement for chloral hydrate

Plant tissues often have structures with different refractive indexes, causing light scattering and spherical aberration, resulting in opaqueness. Image-iT Plant Tissue Clearing Reagent, with a high refractive index of 1.45, allows light to pass through the plant tissues with minimal light scattering, resulting in optical clarity and the ability to image deeper within the tissue.

Traditionally, researchers used chloral hydrate to clear plant specimens, but under current regulations it is a Federally Regulated Schedule IV substance (1), making it harder to acquire and use. Image-iT Plant Tissue Clearing Reagent is an effective replacement for chloral hydrate in almost all applications and tissue types where optical clearing is required.

Image-iT Plant Tissue Clearing Reagent and Image-iT Plant Tissue Hard-Set Mountant are based on Visikol™ for Plant Biology™ and Visikol™ Mount. Visikol for Plant Biology has been used in various fluorescent and colorimetric studies with plants (2,3,4) and has proved an effective substitute for chloral hydrate (1,5).

References:
1. Villani TS, Koroch AR, Simon JE. An improved clearing and mounting solution to replace chloral hydrate in microscopic applications. Appl Plant Sci. 2013 1(5).
2. Aoki Y, Van Trung N, Suzuki S. Impact of Piper betle leaf extract on grape downy mildew: effects of combining 4-allylpyrocatechol with eugenol, α-pinene or β-pinene. Plant Protect Sci. 2018 55: 23-30.
3. Lee KJI, Calder GM, Hindle CR, Newman JL, Robinson SN, Avondo JJHY, Coen ES. Macro optical projection tomography for large scale 3D imaging of plant structures and gene activity. J Exp Bot. 2017 68(3):527-538.
4. Vergara-Díaz O, Chairi F, Vicente R, Fernandez-Gallego JA, Nieto-Taladriz MT, Aparicio N, Kefauver SC, Araus JL. Leaf dorsoventrality as a paramount factor determining spectral performance in field-grown wheat under contrasting water regimes. J Exp Bot. 2018 69(12):3081-3094.
5. Urban MA, Barclay RS, Sivaguru M, Punyasena SW. Cuticle and subsurface ornamentation of intact plant leaf epidermis under confocal and superresolution microscopy. Microsc Res Tech. 2018 81(2):129-140.

Histomount Mounting Solution

This mounting solution is designed for permanent mounting of DAB and BCIP/NBT. Dehydrate tissue before use. This is the same solution that is provided in the Histostain® -SP DAB Kit.

CytoVista™ 2-mm Coronal Mouse Brain Slicer Invitrogen™

This 2-mm coronal mouse brain slicer allows you to easily cut a mouse brain into smaller pieces for easier imaging with objectives that have a limited working distance. This slicer is 3D-printed out of resin and can be easily washed and cleaned between uses. All you need is a standard razor blade to start slicing your tissues.

Learn more about CytoVista 3D Culture Clearing reagents ›

Features of the CytoVista family of tissue and 3D cell culture clearing reagents include:
• Rapid clearing of fluorescently labeled tissue for 3D imaging
• Minimal shrinkage, expansion, or other morphological changes to tissue
• Simple workflow does not require any special instruments or equipment and is easily adapted to IHC
• Compatible with most fluorophores, including dyes and fluorescent proteins

The CytoVista tissue and 3D cell culture clearing workflow clears tissue or 3D cultured cells with minimal changes to morphology or the sensitivity of detection with almost any fluorophore. With an easy-to-use protocol, whole mouse brain (8-mm section) can be cleared in 24 hours, or a 1-mm section in 2 hours, without the use of any special instruments or equipment.

The CytoVista clearing workflow is compatible with most fluorophores, including fluorescent proteins that are detected with common fluorescent imaging instruments, such as wide-field microscopes, high content analyzers, confocal microscopes, and lightsheet microscopes. For first time users, we recommend the CytoVista Tissue Clearing/Staining Kit (Cat No V11324) or CytoVista 3D Cell Culture Clearing/Staining Kit (Cat No. V11325). These kits contain all necessary reagents for both clearing and IHC staining.

CytoVista clearing technology sufficiently clears tissue for 3D fluorescent imaging, but unlike other clearing techniques does not significantly changes the tissue morphology. Minimal morphological changes, such as shrinkage and contraction, have been observed. For precious samples, the clearing can be reversed, and the tissue can be processed for histology studies, like H&E staining.

For tissues that are easier to clear, like brain, lung, intestine, skin, and tissues of less than 250-µm thickness, treatment with CytoVista Tissue Clearing Reagent is sufficient for 3D imaging. However, tissues of more than 250-µm thickness or that are hard to clear like kidney, liver, heart, and placenta will require an initial treatment with CytoVista Tissue Clearing Reagent followed by treatment with CytoVista Tissue Clearing Enhancer.

CytoVista 3D Cell Culture Clearing Reagent is recommended for spheroids or organoids up to 1 mm in thickness.

For hard tissues like bone, cartilage, and connective tissue, CytoVista Tissue Clearing Reagent is not recommended.

Image-iT™ FX Signal Enhancer ReadyProbes™ Reagent Invitrogen™

Image-iT® FX Signal Enhancer ReadyProbes® Reagent dramatically reduces background fluorescence resulting from non-specific staining during secondary detection using conjugates of streptavidin or secondary antibodies. This reagent is applied directly to slides or coverslips containing fixed and permeabilized cell or tissue samples prior to staining with fluorescent probes.

• Easy protocol—apply ready-made solution using a dropper bottle
• Compatible with the other steps in your immunostaining protocol
• Effective with most fluorescent labels
• Stable at room temperature—keep handy at your scope or cell culture area

See other ReadyProbes® reagents for cell staining
Find more tools for fixed cell imaging

Cell imaging applications
Image-iT® FX Signal Enhancer reagent is a highly effective product for blocking background staining that results from the nonspecific interactions of a wide variety of fluorescent dyes with cell and tissue constituents. Background staining seen with fluorescent conjugates of streptavidin and antibody conjugates are largely eliminated when the Image-iT® FX Signal Enhancer reagent is applied to fixed and permeabilized cells prior to staining.

Suggestions for use
• Apply Image-iT® FX Signal Enhancer reagent directly to slides or coverslips containing cell or tissue samples prior to immune-staining.
• After the fix/perm step, simply wash and add enough drops to cover your sample, then incubate for 30 min and proceed with your normal staining protocol.
• Additional blocking steps may be performed subsequent to blocking with the Image-iT™ Signal Enhancer ReadyProbes® Reagent, as needed

ReadyProbes™ In Situ Hybridization (ISH) Blocking Solution (5X) Invitrogen™

ReadyProbes In Situ Hybridization (ISH) Blocking Solution minimizes non-specific background staining in chromogenic in situ hybridization (CISH) or fluorescence in situ hybridization (FISH) procedures. It is provided as a 5X solution that is diluted to 1X with distilled or deionized water. After the labeled DNA or RNA probe hybridization and wash steps, the sample is incubated with 1X Ready Probes ISH Blocking Solution for 30–60 minutes. 1X ReadyProbes ISH Blocking Solution can also be used as diluent for antibodies, avidin, streptavidin, or biotin during incubation steps.
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