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Antigen, CD86

A costimulatory ligand expressed by Antigen-Presenting Cells that binds to CD28 Antigen with high specificity and to CTLA-4 Antigen with low specificity. The interaction of CD86 with CD28 Antigen provides a stimulatory signal to T-Lymphocytes, while its interaction with CTLA-4 Antigen may play a Role in inducing Peripheral Tolerance.