What does the immune system do, how does it work with other systems, and what problems might occur with it? These facts are highlighted.

In this video segment from The Secret of Life, watch as a virus attacks a cell, and learn how the immune system reacts to this onslaught. Includes background reading material and discussion questions. [1:40]

Study how the immune system helps to protect us against diseases and pathogens such as viruses, bacteria, and parasites.

Top ranked hospital devoted entirely to respiratory, allergic and immune system diseases. Offers links to assist in research.

Find out how the body rids itself of wastes and fights off infections with the help of the lymph nodes and white blood cells.

This site offers a wealth of information regarding HIV and AIDS. Content ranges from basic health information found under "FAQ" to topical information such as the risk of AIDS to teens and home care options.

Complete medical education project explores the role and uses of vaccines now and in the past. Find information and analysis about vaccination controversies; answers to frequent questions about vaccinations; timelines of diseases,...

The Why Files have provided a wonderful site examining the possible AIDS vaccines being developed. Several topics are discussed, including topics about the chemical makeup of the virus itself.

This video describes the role of the brain in regulating body temperature and how sometimes fever is employed to fight off infection.

This fact sheet provides a quick overview of the major health problems linked to overexposure to UV radiation: skin cancer (melanoma and nonmelanoma), premature aging of the skin and other skin problems, cataracts and other eye damage,...

Research assesses the premise that music has a direct influence on the body, mind, and spirit.

In addition to discussing the use of a vegan diet to lower the risk of arthritis, this article also talks about diet as a means of preventing other diseases and disorders.