Hello, Has anyone experienced a loss or lessening expression of CD23 on cryopreserved cells from a CLL patient. When we test the patients fresh cells, they are CD23 positive but when we test cryopreserved cells, they are dim intensity or negative. Usually, we are able to find expression of CD23 on cryopreserved lymphocytes. We have not seen this problem before. Thanks for any insight. bessie -- Bessie Kam Email: bkam@dls.queens.org The Queen's Medical Center, Pathology FAX: 808-547-4045 Phone: 808-547-4271
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