Question

2. How does a person become immune
against a disease?​

Answer 1

Answer:

White blood cells of your immune system make proteins called antibodies to fight the antigen. Antibodies attach to antigens the way a key fits into a lock, and they destroy the invading germ. Once you've been exposed to a virus, your body makes memory cells.

Answer 2

White blood cells of your immune system make proteins called antibodies to fight the antigen. Antibodies attach to antigens the way a key fits into a lock, and they destroy the invading germ. Once you've been exposed to a virus, your body makes memory cells.

The immune system has a vital role: It protects your body from harmful substances, germs and cell changes that could make you ill. It is made up of various organs, cells and proteins.