B220-positive CD38-negative unswitched memory B cell
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A B220-positive CD38-negative unswitched memory B cell is a CD38-negative unswitched memory B cell that has the phenotype B220-positive, CD38-negative, IgD-positive, CD138-negative, and IgG-negative. [ GOC:dsd http://www.ncbi.nlm.nih.gov/pubmed/20123131 GOC:tfm GOC:rhs ]