The document describes the key players in the immune system that work together to identify and eliminate invaders like bacteria and viruses. Macrophages detect enemies and alert T-helper cells, which communicate with B-cells to produce antibodies tailored to the antigen. Antibodies and complement then seek out and destroy the antigen, forming immune complexes that are detected and removed by polymorphs, while T-suppressor cells signal B-cells to stop antibody production once the threat is eliminated.

1. Characters of the Immune System

2. The Enemy Invader Usually a bacteria or virus. Comes in many different forms and attacks the body

3. The Macrophage Body's Radar Type of cell normally present in the blood Detects the enemy

4. The T-Helper Cell Communication Link Between the body's macrophages and b-cells

5. The B-Cell The War Factory Produces antibodies custom tailored for the type of enemy antigen

6. Antibodies Antigen Busters Designed to seek and destroy the specific enemy antigen

7. Complement Support Troops Assists the antibodies to neutralize the enemy antigen

8. When antibodies and complement attack the antigen, an immune complex is formed. Immune Complex

9. Polymorph Disposal Unit Detects the immune complexes and removes them

10. T-Suppressor Cell Another Communication Link Signals to the b-cell to stop making antibodies once the antigen has been destroyed

11. Normal Body's Immune System