| immune system |
The body's complicated natural defense against disruption caused by invading foreign agents (eg, microbes, viruses). HIV attacks the immune system, weakening it and making the body more susceptible to infection. Immunization To protect against an infectious disease by vaccination , usually with a weakened (attenuated) or killed form of the disease-causing microorganism. ...
출처: www.aidonaids.com/glossary.htm
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