These are some of the major components of your immune system: How does your immune system fight infection? If germs get past your defenses, your body launches an immune response to fight them.

Our bodies depend on an alphabet of vitamins that promote the development, growth and function of cells, including immune cells. Vitamin deficiencies can hinder the immune system's ability to fight ...

The idea behind CiViA is that we want to understand how the body fights infections without harming itself at the same time. The mechanism we've found doesn't cause inflammatory reactions," he says.

The unusual molecular makeup of Borrelia burgdorferi, which causes Lyme disease, may hold clues for understanding and treating the tick-borne disease.

AIDS researchers continue to make progress in battling HIV, addressing the fight with a variety of new and promising approaches...but this NOVA Hot Science isn't about the fight against the AIDS ...

It would be another two years before French researchers would identify a retrovirus as the cause of AIDS, or acquired ...

Learn all about health and infection - and how the body fights against it. We'll explain different diseases, what causes foodborne illnesses, and the body's defence mechanisms. In this set of ...