Immune System Response

step #1

Dec 1, 2017

A person eats an allergen, or substance that causes an allergic reaction for the first time.

step #2

Dec 2, 2017

When the person eats the allergen, the body creates an antibody, or a protein that detects harmful substances.

step #3

Dec 3, 2017

This antibody, attaches itself to cells found in tissues all over the body in order to prepare the body for if that allergen enters the body again.

step #4

Dec 4, 2017

When the food allergen enters the body again, the allergen binds to the antibodies and sends out signals to the body to release large amounts of histamine.

step #5

Dec 5, 2017

The histamine causes irritation and swelling in parts of the body.

step #6

Dec 6, 2017

The result of this irritation varies in person to person, from mild hives, shortness of breath, to anaphylaxis.