Question

what is immune system ?

Answer 1

Immune system is a network or netting of cells tissues and organs which help us to protect our body from diseases and repairing too if we got hurt through cell division .
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Answer 2

The immune system is made up of a network of cells, tissues, and organs that work together to protect the body.

One of the important cells involved are white blood cells, also called leukocytes, which come in two basic types that combine to seek out and destroy disease-causing organisms or substances.