PBS
Pbs Teachers: Surviving Aids: Fighting Back (Hot Science)
Explore the body's immune system to understand how a virus enters the body and how the human body fights against the viruses like the mumps virus and HIV.
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Cells of the Immune System
Slideshow with embedded video and audio explains our immune system and how it works. Includes a worksheet handout.
PBS
Pbs: The Immune System's Battle Against Disease
A "just for fun" Shockwave game that allows you to control an animated macrophage against an invading virus. You must figure out how the let the Helper T-cells get involved.
Cells Alive
Cells Alive: How Lymphocytes Produce Antibody
Learn about how the immune system works. Topics include antigens and antibodies.
Cells Alive
Cells Alive!: Cell Gallery
This gallery shows pictures of a variety of cell types with hyperlinks to additional information about cells. Very interesting pictures.