Abstract
Evaluation of 139 monoclonal antibodies detecting human leukocyte differentiation antigens during the First International Workshop on Human Leucocyte Differentiation Antigens in 1982 permitted the designation of a nomenclature for the Clusters of Differentiation of antigens defined on human leukocyte populations.
The general principles of this nomenclature, as well as the characteristics of the fifteen Clusters of Differentiation which have so far been defined, are presented.