Fig. 3
From: Basophil activation test: food challenge in a test tube or specialist research tool?
Basophil reactivity and basophil sensitivity. Two examples of dose–response curves of basophil activation following stimulation with various concentrations of allergen from two different patients are represented. The proportion of CD63+ positive cells is a measure of basophil reactivity and EC50, the effective concentration at 50 % of the maximal activation, is a measure of basophil sensitivity