Immune System Response Timeline

By elliseross
  • Step 1

    Step 1

    Person concumes allergen or substance that casues the allergic reaction for the first time.
  • Step 2

    Step 2

    When the person eats the allergen, the body creates an antibody, or a protein that detects harmful substances.
  • Step 3

    Step 3

    This antibody, attatches 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

    Step 4

    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

    Step 5

    The histamine causes irritation and swelling, or irritation on/ in parts of the body.
  • Step 6

    Step 6

    The result of this irritation varies for each individual, from mild hives, shortness of breath, to anaphylaxis.