Question

What is a immune system

Answer 1

Answer:

The immune system is a complex network of cells and proteins that defends the body against infection. The immune system keeps a record of every germ (microbe) it has ever defeated so it can recognise and destroy the microbe quickly if it enters the body again.

Explanation:

Answer 2

Answer:

The immune system is the body's defense against infections.The immune system attacks germs and helps keep us healthy.

Explanation:

Many cells and organs work together to protect the body. White blood cells, play an important role in the immune system.When the body senses foreign substances, the immune system works to recognize the antigens and get rid of them.