Anti-CD19 Antibody

CD19 is a 95 kDa transmembrane glycoprotein of the immunoglobulin superfamily, expressed throughout B-cell development from the pro-B stage through mature B cells but absent on terminally differentiated plasma cells. This polyclonal IgG reagent from Antibodies.com is supplied as a 100 µg liquid aliquot and has been validated for western blot detection of endogenous CD19 in human and mouse samples. The antibody supports research into B-cell lymphoma biology, leukemia immunophenotyping, and the development of CD19-directed CAR-T cell therapies used against B-cell malignancies.

For best results, store the vial refrigerated at 4 degrees C, aliquot to avoid repeated freeze-thaw cycles, and avoid prolonged exposure to light. Suggested starting dilution range for western blot is 1:500 to 1:2000, with an expected band near 95 kDa in lysates from human or murine B-cell lines.