The growing number of standards commercially available in the field of flow cytometry makes it difficult to know which standards to use to obtain a desired level of quality assurance. A classification system of fluorescence standards has been developed on the basis of their physical characteristics.
Fluorescent erythrocyte ghosts as standards for quantitative flow cytometry
β 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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β¦ 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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