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CellMask™ Green Plasma Membrane Stain

Catalog number: C37608

Molecular Probes™  Related applications: Cell Structure

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Description

The CellMask™ Green Plasma Membrane Stain enables fast and uniform labeling of the plasma membrane in almost all cell types. This stain works rapidly and can be detected using a standard FITC filter set with any imaging instrument. Depending upon the cell type and experimental conditions, the plasma membrane staining will last for 60–90 minutes without detectable internalization, providing enough time for most live cell dynamic studies. The stain survives fixation, but not permeabilization.

Features of the CellMask™ Green Plasma Membrane Stain include:

• Sensitivity—specific and rapid plasma membrane staining
• Excellent retention—staining lasts for 60–90 minutes
• Emission/excitation (522/535 nm) works with standard FITC settings

Drawbacks of Other Methods
The plasma membrane is a convenient marker of cell boundaries and as such, a number of probes have been used for staining of the membrane. Typically, dyes of a lipophilic nature are used; however, they internalize rapidly, offering a very narrow window for imaging. Fluorescently labeled lectins, such as wheat germ agglutinin, have also been employed as plasma membrane stains. Conjugated lectins depend on cell surface sugars for staining and as a result, stain inconsistently with variation across cell types. Robust plasma membrane staining is important for a range of applications including translocation assays, plasma membrane dynamics, and as a general tool for cell identification in traditional and automated imaging and analysis.

How CellMask™ Plasma Membrane Stains Work
CellMask™ Green Plasma Membrane Stain is designed to deliver uniform staining of the plasma membrane across a wide variety of mammalian cell types and is slow to internalize, particularly compared to traditional approaches such as DiI, DiO, and labeled wheat germ agglutinin. CellMask™ plasma membrane stains are amphipathic molecules containing a lipophilic moiety for excellent membrane loading and a negatively charged hydrophilic dye for "anchoring" of the probe in the plasma membrane. While the CellMask™ plasma membrane stains provide ample opportunity for live cell imaging, the staining pattern is also maintained after fixation with formaldehyde, enabling additional multiparametric imaging options. However, staining with CellMask™ plasma membrane stains does not survive detergent extraction and therefore cannot be used in conjunction with probes that require permeabilization.
For Research Use Only. Not for use in diagnostic procedures.

Specifications

Sub-Cellular Localization: Plasma Membranes
Color: Green
For Use With (Equipment): Fluorescence Microscope, Confocal Microscope
Product Size: 100 µL

Contents & storage

Store in freezer (-5 to -30°C) and protect from light.

Documents

Manuals & protocols

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