EPO and receptor numbers

From: Prolifaron@AOL.COM
Date: Thu Jan 21 1999 - 13:14:14 EST


I am new to flow and have some basic questions and some specific questions.  I
would like to examine antibodies to the Epo receptor by flow.  I purchased a
goat antibody that recognizes soluble receptor in ELISA and western.  When I
try to examine it on cell surface on TF-1 cells, a human erythroleukemia cell
line, I do not detect a signal with either FITC or PE conj secondary
antibodies.  Can anyone tell me the lower limit for detection of a cell
surface protein by FACS?  How many receptors per cell do I need to see
binding?  

Also, has anyone out there ever examined EPO receptor by FACS?  Can you help
me?
Thanks,
Kathy Bowdish
Prolifaron, LLC



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