FIGHTING CD

PRECAUTIONS

* WASH YOUR HANDS

* PROTECT YOURSELF FROM VECTORS

* AVOID SHARING PERSONAL ITEMS

* HANDLE FOOD PROPERLY

* EAT WELL AND EXERCISE

* AVOID TOBACCO AND OTHER DRUGS

* COVER YOUR MOUTH!!

IMMUNE SYSTEM

A network that fights off pathogens

1. INFLAMMATORY RESPONSE - a reaction to to tissue caused by infection

2. IMMUNE RESPONSE - I.S. triggers specific defenses to certain pathogens

PHAGOCYTES - white blood cells that attack invading pathogens

LYMPHOCYTES - white blood cell that coordinates/performs functions of immunity

WHITE BLOOD CELLS

HELPER T CELLS

trigger production of B cells and killer T cells

KILLER T CELLS

Attack/destroy ONLY infected cells, not pathogens

SUPPRESSOR T CELLS coordinate the actions of other T cells. “turn off” T cells when infection is cleared.

B CELLS

Produce antibodies: proteins that act against antigens

ANTIGENS:

Found in toxins/pathogens trigger an immune response