Question

What is immune system

Answer 1

The system in your body that produces substances to help it fight against diseases and infections.

Example sentence. A strong/healthy immune system

Answer 2

It is one of the 11 systems in your human body. The immune system, specifically, is one that contains many biological processes that identify, and act to protect your body, from different diseases and sickness. Some have better than others, which is why they may not get sick as easily. those with weak immune systems get sick more often because their body may not be prepared to take on certain diseases.

Hope this helps :)