The body’s defense system that helps fight infections and diseases.
Related definitions
- T cellA type of white blood cell, specifically a lymphocyte, that plays a role in the body’s immune system.
- immunotherapyA treatment that uses the body’s own immune system to fight disease.
- immunosuppressionThe ability of the immune system to defend against disease of infection is reduced either temporarily or permanently. It can be caused by certain diseases or as a result of treatment. Like anticancer drugs and drugs used to prevent the rejection of a transplant.
- corticosteroidsA class of drugs that mimic cortisol, a hormone produced by the adrenal glands. They are used to reduce inflammation and suppress the immune system. They can also be used to treat some blood cancers.
- cyclosporinA drug that helps stop the immune system from attacking a transplanted organ or cells It helps prevent rejection and graft-versus-host disease.









