Abstract

We examined the aggregation responses of normal neutrophils treated with the murine monoclonal antibody (MoAb) 60.3. Addition of MoAb 60.3 to normal neutrophils produced dose-dependent inhibition of neutrophil aggregation in response to phorbol myristate acetate, zymosan-activated plasma, and N-formyl-methionylleucylphenylalanine. We conclude that the membrane glycoprotein complex recognized by MoAb 60.3--designated CDw18- -is required for neutrophil-neutrophil aggregation in vitro.

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