Disease

inflammation:

• granulocytes release chemicals which stimulate:
• increase flow of blood so the area turns red.
• capillary leakage so the area swells.
• sensury neuron impulses so the area is tender.
• blood clotting so a scab is formed.

the specific immune system.

• leaves a memory cell.
• involves the lymphocyte cells capable of recognising foriegn cells.

antigens

• a large molecule on the outer surface of a cell.
• cells from different individuals have different antigens.