CTLA 4 Antigen
Cytotoxic T Lymphocyte Antigen 4
Cytotoxic T Lymphocyte Associated Antigen 4
Cytotoxic T-Lymphocyte Antigen 4
Cytotoxic T-Lymphocyte-Associated Antigen 4
An inhibitory T CELL receptor that is closely related to CD28 ANTIGEN. It has specificity for CD80 ANTIGEN and CD86 ANTIGEN and acts as a negative regulator of peripheral T cell function. CTLA-4 antigen is believed to play role in inducing PERIPHERAL TOLERANCE.