expression of the common acute lymphoblastic leukemia antigen ( calla ) on the surface of individual cells of the human lymphoblastoid lines cw678 , namalwa , and nalm-6 , and the distribution of the antigen epitopes within the cell populations have been determined quantitatively with the murine monoclonal anti-calla antibody j5 .
C0003320
antigen
C0003316
epitopes