The Immune System
The Immune system is one of the complicated systems of defense that our body uses to fight off or to prevent attack from germs. Body has variety of barriers. Skin is a barrier that stops many germs getting in. Body has many specialized cells and chemicals that fight germs that get inside Mucus, Itching, Sneezing, Coughing and vomiting are also helpful to get rid of unwanted invaders. White blood cells also to make the immune system strong. In the recent Covid-19 those people remained safe who were lucky to have a better immune system in the body Mucus lines airways and lungs to protect from Covid-19.