Product Literature

Application Notes & Tutorials: Isolation of Living In Vitro Cells Using the ArcturusXT™ Microdissection Instrument - Petri Dish Protocol

Citations & References

Fractionation of human lymphocyte subpopulations on immunoglobulin coated Petri dishes.

  • Authors: Fong S, Tsoukas CD, Pasquali JL, Fox RI, Rose JE, Raiklen D, Carson DA, Vaughan JH
  • Journal: J Immunol Methods (1981) 44:171-182
  • PubMed ID: 6456310

Citations & References

Petri dish PCR: laser-heated reactions in nanoliter droplet arrays

  • Authors: Kim, H; Vishniakou, S; Faris, GW
  • Journal: LAB ON A CHIP 2009 9:1230-1235

Product FAQ

What is the difference between “long working distance” (LWD) objectives and “coverslip corrected” (CC) objectives in the EVOS imaging systems?

Answer

All the EVOS imaging systems are inverted microscopes. For CC objectives, the coverslip must be face down, facing the objectives as the lenses have a short working distance suitable only for thin glass or plastic coverslips. LWD objectives are designed for viewing from the bottom of microplates, petri dishes, or culture flasks; the longer working distances of the lenses in these objectives accommodate thicker materials such as the plastic bottoms of various vessels.

Answer Id: E14922

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Product FAQ

How do I remove bubbles from the vials of either ProLong Antifade Mountant, ProLong Gold, ProLong Diamond or ProLong Glass Antifade Mountants or ProLong-mounted samples?

Answer

Bubbles may be removed by one of two methods:

1. Place the amount of ProLong reagent you wish to use on your sample (plus a little excess) in a microcentrifuge tube. Close the cap and centrifuge this aliquot using a tabletop microcentrifuge (speed from 7, 000 to 13,000 rpm). Bubbles should move to the top and these bubbles may be aspirated using a pipettor/pipette tip.
2. Unscrew the lid of the bottle/vial containing the ProLong reagent to make it loose, but do not remove the lid. Place the entire bottle/vial into a vacuum flask, using a faucet aspirator (faucet T-tube). Apply a vacuum (water running through the faucet) and allow vacuum aspiration to occur from 10 to 20 minutes to degas the mixture.

To avoid the formation of bubbles on a sample or to remove bubbles:

1. Before pipetting the desired amount of ProLong reagent for mounting, set the pipettor for a slight excess volume. When pipetting up the mixture, do not pipette up the complete amount, but lift up the pipette tip from the bottle with the pipettor not yet up to full volume. This prevents the aspiration of bubbles into the pipette tip.
2. Bubbles trapped during application of the coverslip: When placing your coverslip onto your drop of ProLong reagent, place the coverslip at a slight angle then, gently lower the coverslip. If the coverslip is lowered flat onto the sample, or lowered too quickly, bubbles can be trapped.
3. Bubbles trapped in tissue: One problem with tissue sections, particularly cryosections is that air can get trapped within and under the section. Upon mounting, bubbles are not observed but as the mountant hardens, it compresses the sample slightly, forcing air out of the section. This leads to microscopic bubbles forming over the section, trapped within the mountant. To avoid this, degas the tissue sample prior to mounting. Place the sections submerged in buffer or blocking solution, into a vacuum chamber and expose the sample to the vacuum. This will degas the sections and buffer. Remove the sample from this degassed buffer and mount.
4. If ProLong-mounted samples have already cured but have bubbles, you can un-mount your sample by placing the slides into PBS (Coplin jar or a Petri dish filled with PBS). The ProLong reagent will swell and the coverslip will slide off or can be gently removed manually. You can then re-mount with a new aliquot of ProLong reagent.

Answer Id: E14794

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Product FAQ

What is Arcturus Laser Capture Microdissection (LCM)?

Answer

The ArcturusXT LCM Instrument has a proprietary combination of a gentle IR laser and a powerful UV laser that work in conjunction to efficiently isolate cells from frozen sections or paraffin embedded sections without changing morphology or integrity of the biological content. The IR laser helps to capture the cells of interest, and the UV laser microdissects the captured cells. This is done without affecting the morphology of the cells, and allows for visual inspection of the remaining specimen to help ensure the quality of the sample collected. In addition to the flexibility that the dual laser system provides, there is the flexibility of multiple stage inserts for various sample types. A wide-slide stage format is available for neurobiology researchers working with very large sections of brain tissue. The petri dish stage insert enables live-cell microdissection applications such as stem cell research and other rare-cell isolations.

Answer Id: E15451

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