Question

The ability of the body's immune system to recognize its own tissues is known as

• A. Immunologic tolerance
• B. Autoimmunity
• C. Severe combined immunodeficiency disease
• D. Hypersensitivity

Answer 1

Answer: (A)

Immunologic tolerance

• Immunologic tolerance is the state of unresponsiveness of the immune system to substances or tissues that have the potential to induce an immune response. Self-tolerance to individuals own antigen is achieved through central and peripheral tolerance.
• Autoimmunity is the system of immune responses of an organism against its own healthy cells and tissues.
• Severe combined immunodeficiency (SCID) is a group of rare disorders caused by mutations in different genes involved in the development and function of infection-fighting immune cells.
• Hypersensitivity (also called hypersensitivity reaction or intolerance) refers to undesirable reactions produced by the normal immune system, including allergies and autoimmunity.

So, the correct option is 'Immunologic tolerance'.