The Immune System Has Three Main Functions:

1.Defense:
The immune cells will create antibodies like bullets or bombs to kill the intruders.


2. Clearance:
The immune cells eliminate wastes and impurities including the remains of bacteria and dead cells from our body, through sweat and phlegm.



3. Repair:
The immune cells will repair the injured tissues like a cut to the finger, enabling the wound to be healed within a few days.