How Stuff Works: Immune System (Health/Immune_Disorders)
howstuffworks.com
Description: Describes the immune system and discusses related topics such as allergies and AIDS....Inside your body there is a mechanism designed to defend you from millions of bacteria, microbes, viruses, toxins and parasites that want to invade your body. Find out how the human immune system works
Specializes in: immune system immunity autoimmunity does immune work bacteria virus... germ thymus