CD11b expression on Lymphocytes

From: Maciej Simm (simmmmer@yahoo.com)
Date: Wed Apr 19 2000 - 16:37:35 EST


Greetings once again,

We have recently received a blood specimen and were asked to stain
for CD18/11b ( I love it how doctors don't explain the condition of
the patient ahead of time, so we know what to look for )

We found, that when compared to our NC's (N=300+ for this "tube" and
growing) this patient had less +/+ lymphoctes (~30% vs. 12%). The
expression of CD18 was not reduced - all of his leukocytes had >97%.

A question came up: what is the significance of CD18+/CD11b-
lymphocytes? what is the significance of a decrease in the +/+
population?

We do not routinely do CD11a or CD11c - are these mutually exclusive?
I.e. it's either a, b or c but never any of them together?

And finally, is the ligand for CD11b soluble and may have interfered
with our staning?

This staining was done in whole blood (which I just found is a
no-no).

I would appreciate if anyone could share any thoughts on this topic.

Maciej

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