Method for recovery of blood cells from dried blood spots on filter paper
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United States of America Patent
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-
Jul 11, 1995
Grant Date -
N/A
app pub date -
Nov 9, 1993
filing date -
Nov 9, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
White blood cells (WBC) were recovered from dried blood spots on Guthrie cards by a simple and efficient prototypic method. The mummified formed elements of dried blood on filter paper are first fixed, then the red blood cells laked in-situ. Last, the paper matrix is itself digested away with cellulase in acid buffer, releasing the partially rehydrated, mummified WBC and other cellular materials into suspension for collection and examination.
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