cytokines - control reagents

From: Maciej Simm (simmmmer@yahoo.com)
Date: Tue Mar 20 2001 - 21:05:48 EST


Dear group,

I've been recently having some problems with control antibodies for
the intracellular staining. Basically in my tubes with permeabilized
monocytes, the control glows in the 2nd log.

The same cells, in a non-permeabelized tube,  with another reagent
for isotype control, ie. surface staining control, is fine (no
signal).

What I tried doing is using PE-conjuaged anti-CD19 antibody (not
found on mono's), which works great as a control - but I'm not sure
if this is a good reagent for intracellular staining?

Sometimes I read people's materials  and methods "irrelevant
isotype-matched fluorescent antibody was used.." what exactly does
that mean?

thanks for any suggestions,

maciej

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|    Maciej S. Simm      | 525 E 68th Street  |
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