AIDS / HIV

  1. Home
  2. Health
  3. AIDS / HIV
Immune System
Back to Index I    Full Glossary

Definition: The body's complicated natural defense against disruption caused by invading foreign agents (e.g., microbes, viruses). HIV attacks the immune system, weakening it and making the body more susceptible to infection.

Related Resources:

Opportunistic Infections
Once the immune system is weakened, the body is at risk for developing many types of infections. Here is a guide that details these serious infections.

Back to Index I    Full Glossary

Explore AIDS / HIV

About.com Special Features

We comply with the HONcode standard for trustworthy health information: verify here.

AIDS / HIV

  1. Home
  2. Health
  3. AIDS / HIV

©2009 About.com, a part of The New York Times Company.

All rights reserved.