Complement is a group of proteins that can punch holes in cells and attract white blood cells. It functions through opsonization, chemotaxis, and cell lysis. The complement system has an alternative pathway that does not require antibodies. Cellular immunity involves macrophages engulfing antigens through endocytosis, preparing antigen pieces, displaying them on the surface, and showing them to T helper cells to signal T killer cells to swarm the site.

1. Immunology
Complement
Cellular Immunity

2. Special group of proteins that punch holes in cells
Sticks to constant region of antibody
Multi-step process
5% of blood protein

4. Functions
Opsonization = Enhanced eating by WBC
Chemotaxis = Attract WBC
Cell Lysis = Burst open cell
Clumping together of antigens

5. DETAILS
http://www.youtube.com/watch?v=vbWYz9XDtLw&feature=player_detailpage

6. Alternative Pathway =
Does not require antibodies

7. Cellular Immunity
Macrophage
Antigen

8. Eats antigen = Endocytosis
Macrophage
Antigen

9. Pieces are prepared
Macrophage

10. Displaces pieces on surface
Macrophage

11. Shows to T helper cell
T Helper
Macrophage

12. T helper cell signals Killers
T Helper

13. T Killers swarm site

14. T Supressor Cell

15. Details
http://www.youtube.com/watch?feature=player_detailpage&v=1tBOmG0QMbA