The Immune System Process--Bailey Wiggins By baileymwiggins 2018 Person eats a food allergen 2018 An IgE antibody indicator is formed for when that food enters the body again 2018 Antibody attaches itself to cells found in the tissues in cells all over the body 2018 When this allergen enters the body again, antibodies attach themselves to the allergen, and the body releases a large amount of histamine. 2018 Histamine causes visual and internal irritation 2018 Histamine release causes expansion of the blood cells and increased permeability