Immunity
| Immunity | |
|---|---|
| Term | Immunity |
| Short definition | immune thrombocytopenia (ih-MYOON THROM-boh-sy-toh-PEE-nee-uh) A condition in which platelets (blood cells that cause blood clots to form) are destroyed by the immune system. The low platelet count causes easy bruising and bleeding, which is visible as purple areas on the skin, mucous membranes, and the outer linings of the organs. |
| Type | Cancer terms |
| Specialty | Oncology |
| Language | English |
| Source | NCI |
| Comments | |
immunity - (pronounced) (ih-MYOO-nih-tee) In medicine, the immune system's method of protecting the body from an infectious disease. The three types of immunity are innate, adaptive, and passive. Innate immunity includes barriers such as skin and mucous membranes that prevent harmful substances from entering the body. It is the body's immune system's first reaction to a foreign substance. Adaptive immunity occurs in response to infection with or vaccination against a microorganism. The body makes an immune response that can prevent future infection with the microorganism. Adaptive immunity can last a lifetime. Passive immunity occurs when a person receives antibodies to a disease instead of producing them through their own immune system. Passive immunity provides immediate protection but only lasts a few weeks or months
External links
- Medical encyclopedia article on Immunity
- Wikipedia's article - Immunity
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