The immune system protects your child's body from outside invaders, such as bacteria, viruses, fungi, and toxins (chemicals produced by microbes). It is made up of different organs, cells, and proteins that work together.

What 3 things does the immune system do?

manage the fluid levels in the body. react to bacteria. deal with cancer cells. deal with cell products that otherwise would result in disease or disorders.

What is the immune system and how does it work?

Your immune system is a large network of organs, white blood cells, proteins (antibodies) and chemicals. This system works together to protect you from foreign invaders (bacteria, viruses, parasites, and fungi) that cause infection, illness and disease.