Drawn at random from a baseball cap I was given the task of illustrating a Type 1 allergic reaction. In this reaction the body responds to an allergy with a long term reaction, as opposed to an immediate sneeze. The majority of the sources I found used lab data with animal testing as an example on how the immune system can be tricked into reacting to harmless invaders. Two doses of egg albumen results in an allergy and a histamine release which will among other things dilate capillaries.
