Myeloid activation antigen CD66/67: Immunochemical and immuno-cytometric characterization with the Vth workshop monoclonal antibodies

Flow cytometric and immunochemical studies performed with the CD66/67 panel antibodies from the Vth International Workshop on Leukocyte Antigens allowed to subdivide these antibodies into five groups, according to the molecular weights of polypeptides recognized by these antibodies on pooled healthy donor granulocytes. Although some monoclonal antibodies recognized either 95-110 kDa, or 160-180 kDa polypeptides,majority of the examined antibodies reacted with epitopes shaved by both 95-110 kDa and 160-180 kDa polypeptides. Differential tissue polypeptide antigen induced modulation of recognized antigens was observed with HL-60 and U-937 leukemia/lymphoma cell lines. (author)