Table 2: Cell surface CD molecules that are preferentially expressed by B cells.

NameCellular reactivityStructure

CD19Pan-B cell, FDCs?Ig superfamily
CD20Mature B cellsMS4A family
CD21Mature B cells, FDCsComplement receptor family
CD22Mature B cellsIg superfamily
CD23Activated B cells, FDCs, othersC-type lectin
CD24Pan-B cell, granulocytes, epithelial cellsGPI anchored
CD40B cells, epithelial cells, FDCs, othersTNF receptor
CD72Pan-B cellC-type lectin
CD79a,bSurface Ig+ B cellsIg superfamily

FDCs: follicular dendritic cells; Ig: immunoglobulin.