Odd cell population

From: Koratich, Mike (koratich@sri.org)
Date: Thu Jun 03 1999 - 07:35:51 EST


Another question for the group.  We are doing work with new adjuvants in
mice where we inject the mice with varying concentrations of adjuvant and
OVA and then redose 2 weeks later and 2 weeks after that we harvest the
spleens and take serum.  What we are finding and what I need some help
interpreting is the following.  In the highest 2 concentrations of adjuvant
the spleens are enlarged and friable and have poor proliferation when
stimulated with OVA.  Antibody production in these animals is mostly
unaffected.  Having seen this on several occasion we decided to do a small
flow panel on our last study.  The panel showed the following: in the
highest 2 concentrations there is a population a cells which are CD3 dim,
CD4 dim, CD8 -, CD45R+.  The scatter shows these cells in about the same
area as monocytes in SS and with a broad range over FS.  This population
comprises about 45% of the 348 panel.  Further this population is completely
absent in PBS and Alum controls and is about 8% in our lower dilutions of
adjuvant.  I would love to repeat this study with a larger panel but that is
not possible.  I would also like to give all of you more info on the
adjuvants but I can't do that either.  

Any and all ideas on what this may be are encouraged.

Thanks,

Mike Koratich
Serquest
A Southern Research Institute Company
2000 Ninth Ave South
Birmingham AL 35205



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