Immunoglobulin M Positive Class-switched Memory B-Lymphocyte Count

**Semantic type:** Laboratory Procedure

**Definition:** A measurement of the IgM positive class-switched memory B-lymphocytes in a sample.

**Synonyms:** - B-Lymphocytes Memory Switched IgM+ - BLym Mem Sw IgM+ - BLym Mem Sw IgM+ - BMSM - Immunoglobulin M Positive Class-switched Memory B-Lymphocytes Count