This program is a great introduction to the immune system. It provides wonderful animation of the internal immune system cells in the blood vessels and outlines the phases of immune response - from recognition of the invader to its eventual slowdown and defeat. AIDS is mentioned briefly.

Originally released by Marsh Media, 2009. Streaming video file encoded with permission for digital streaming by Infobase on May 02, 2015.

Immune System (5:44); --Immunity (2:59);.