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Fluorescent erythrocyte ghosts as standards for quantitative flow cytometry

✍ Scribed by S. K. Doberstein; G. Wiegand; L. M. Machesky; T. D. Pollard


Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
405 KB
Volume
20
Category
Article
ISSN
0196-4763

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✦ Synopsis


We report here a quick and inexpensive method for preparing standards of known fluorochrome content for calibration and quantitation of flow cytometry fluorescence signals. Erythrocyte ghosts prepared b y hypotonic lysis are U e d with solutions containing fluorescently labeled dextran. Standards prepared by this technique have a MITOW range of fluorescence and a linear response of fluorescence to fluorochrome content up to 2 x lo6 fluorochrome molecules/cell. The volume of ghost standard particles is roughly 70 femtoliters (fl)/cell. The fluorescence of ghost standards is nearly identical to that of commercially available microbead standards of similar fluorochrome content. Ghost standards have stable fluorescence for at least 3 weeks at 4OC. These standards can be made with any fluorochrome or combination of fluorochromes over a wide concentration range.


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