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View additional product information for LIVE/DEAD™ Cell Imaging Kit (488/570) - FAQs (R37601)
9 product FAQs found
Heat killing is commonly used. Place your cells in a tube in buffer and heat at 60oC for 20 minutes. You can also kill your cells by fixing them with ice cold 70% ethanol for 15 minutes. The ethanol-killed cells can then be stored at -20oC until needed, at which point you wash out the ethanol and replace with buffer.
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The LIVE/DEAD Cell Imaging Kit (488/570) (Cat. No. R37601) is used for identifying live and dead cells using fluorescence-based staining. It cannot be used with fixed cells.
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The formulation of the solution as well as the amount and concentration of Calcein, AM provided in the LIVE/DEAD Cell Imaging Kit (488/570) (Cat. No. R37601) is proprietary information.
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Once the Live Green (Component A) and Dead Red (Component B) are mixed, this solution should be used immediately for one-time use and should not be stored.
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The nuclear stain in the LIVE/DEAD Cell Imaging Kit (488/570) is BOBO-3. The amount, concentration, and formulation is proprietary.
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As a general guideline, cell density should be within the range of 1 x 10^6 cells/mL of staining solution. Higher cell densities may result in poor staining (low signal) and lower cell densities may result in over-staining.
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No, Ca++ or Mg++ ions do not interfere with staining using LIVE/DEAD Cell Imaging Kit (488/570) unless when used at high concentrations; salts at high concentrations can promote precipitation of various dyes.
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There are two easy options. One is to heat-inactivate the cells by placing at 60 degrees C for 20 minutes. The second is to subject the cells to 70% ethanol. Alcohol-fixed cells can be stored indefinitely in the freezer until use, potentially up to several years.
Centrifuge cells, pellet, and remove supernatant.
Fix cells: Add 10 mL ice cold 70% ETOH to a 15 mL tube containing the cell pellet, adding dropwise at first while vortexing, mix well.
Store in freezer until use.
When ready to use, wash twice and resuspend in buffer of choice.
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No, it is not possible to assay the viability of the same population of cells longer than a few hours; you will need to use replicate samples. DNA binding dyes are toxic to cells; stained cells should be imaged as soon as possible after staining. Calcein AM is not retained in cells and may be actively effluxed out in the range from minutes to several hours, dependent upon the cell type. Calcein AM is not toxic to cells, so it can be added repeatedly to the same samples. You can assay the proliferation of the same sample of cells over several days using alamarBlue reagent or PrestoBlue reagent, as these dyes are non-toxic to cells.
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