The human immune system may be the most complicated interacting set of organs, cells, chemicals and proteins in the body. Working together, these perform what often seem like miracles of self-defense. This program will describe in detail how these defenders respond to two of the most dangerous invaders: bacteria and viruses. This course is designed to provide nurses and others with detailed descriptions of how the immune system responds to two of the most dangerous invaders: bacteria and viruses. | 
