Human Cytotoxic T Lymphocyte Associated Antigen 4, CTLA-4 ELISA Kit from Bioassay Technology Laboratory

Inhibitory receptor acting as a major negative regulator of T-cell responses. The affinity of CTLA4 for its natural B7 family ligands, CD80 and CD86, is considerably stronger than the affinity of their cognate stimulatory coreceptor CD28