Jayvaghela

When bacteria enter our body.

Our body is beset with bacteria all the time. There is such bacteria in our body which keeps our immune system more strong. Our immune system keeps us safe and our immune system is good for us. If we had not had an immune system, we would have died from a small wound, so our immune system is responsible for our survival. Whenever a deadly bacteria enters our body, our immune system kills it and protects us.