Selective loss of expression of a tumor-associated antigen on a human leukemia cell line induced by treatment with monoclonal antibody and complement.

Abstract

The sensitivity of a common acute lymphoblastic leukemia-associated antigen (cALLa)-positive, human leukemia pre-B-cell line to killing by antibody and complement was studied. A stable subpopulation was selected by its ability to survive four sequential treatments with excess monoclonal antibody (MoAb) directed against an Mr 24,000 glycoprotein associated… (More)

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