Term Name: | memory B cell |
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Synonyms: | memory B lymphocyte, memory B-cell, memory B-lymphocyte |
Definition: | A memory B cell is a mature B cell that is long-lived, readily activated upon re-encounter of its antigenic determinant, and has been selected for expression of higher affinity immunoglobulin. This cell type has the phenotype CD19-positive, CD20-positive, MHC Class II-positive, and CD138-negative. |
Ontology: | Cell Ontology [CL:0000787] |