the capacity of the immune system to carry out its function of distinguishing alien from endogenous material; ability of the body to resist disease
having an impaired immune system and therefore incapable of an effective immune response, usually as a result of disease, such as AIDS, that damages the immune system
failure of the immune system to protect the body adequately from infection, due to the absence or insufficiency of some component process or substance
any substance that stimulates immunity
failure of the body to distinguish between materials that are “self”, and therefore to be tolerated, and those that are “not self”, against which it mounts an immune response. Tolerance results from the interaction of antigens with lymphocytes under conditions in which the lymphocytes are not activated but rendered unresponsive.
the prevention or treatment of disease with substances that stimulate the immune response