Word Network: アレルギー

Immunity refers to the body's ability to resist a particular infection or toxin via specific antibodies or sensitized white blood cells. It can also be used metaphorically to describe a state of being unaffected by something unpleasant because of previous exposure.

An antibody is a protective protein produced by your immune system to fight off harmful substances like viruses or bacteria. It acts like a specialized soldier that remembers specific germs to prevent you from getting sick from the same thing twice.

Hay fever; pollen allergy.