CD19 (CD19 Antigen, B Lymphocyte Antigen CD19, B Lymphocyte Surface Antigen B4, B4, Differentiation Antigen CD19, Leu 12, Leu-12, MGC12802) (AP)

Recognizes human CD19, a 95kD cell surface glycoprotein, which is expressed on cells of the B cell lineage and follicular dendritic cells but absent on plasma cells. CD19 is an important signal transduction molecule which is involved in the regulation of B lymphocyte development, activation and differentiation.