Question

what is the importance of immune system in our body

Answer 1

it protect our body from various diseases . which can harm our body and even led to death. absence of immune system is due to HIV virus which is called AIDS.
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Answer 2

Immune system plays an important role in our body. Its functions are listed below:
1) it detects diseases
2)it delpoys antibodies to fight diseases
3) it remembers the specific antibodies for specific diseases for future outreaks