Differentiation antigens residing on mammalian leukocytes. CD stands for cluster of differentiation, which refers to groups of monoclonal antibodies that show similar reactivity with certain subpopulations of antigens of a particular lineage or differentiation stage. The subpopulations of antigens are also known by the same CD designation.

Synonyms: Cluster of Differentiation Antigens, CD Antigen, Differentiation Antigens, Leukocyte, Human, CD Antigens, Leukocyte Differentiation Antigens, Human, Cluster of Differentiation Marker, 0, Differentiation Antigen Cluster, Cluster of Differentiation Antigen, Antigen Cluster, Differentiation, Antigen, CD, Marker Cluster, Differentiation, Differentiation Marker Cluster, Cluster of Differentiation Markers, Antigens, CD