In a food allergy, the body's immune system mistakes a harmless food molecule for a threatening invader such as a virus or a bacterium.
(the body's immune system; mistakes; a harmless food molecule for a threatening invader such as a virus or a bacterium; L:In a food allergy)
the body's immune system
mistakes
a harmless food molecule for a threatening invader such as a virus or a bacterium L:In a food allergy