Purity：Purified by Protein G affinity chromatography from tissue culture supernatant.
Form：Supplied as a liquid in PBS, pH 7.4, 0.09% sodium azide.
Specificity：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.
