What is the term for the body's ability to discriminate between its' own antigens and nonself antigens?

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Immunologic tolerance is the term for the body's ability to discriminate between its own antigens and nonself antigens. Self-tolerance is the unique ability to recognize the difference between "self" and "foreign" antigens. Autoimmunity is when the innate mechanisms that normally prevent the immune system from attacking self-antigens fail and activated T cells and antibodies begin to attack the individual's own tissues. Immunosuppression refers to the inhibition of the formation of antibodies to antigens that may be present; it is used in transplantation procedures to prevent rejection of the transplanted organ or tissue.

What Is the Term for the Body's Ability to Discriminate