Eosinophil makes sure that the symptoms of an allergic reaction stay around for a while—only a few of them exist inside your body and they tend to hang out in the bone marrow, far away from the action. Cytokines released by Mast Cells and Basophils activate them but they take their sweet time, proliferating and cloning themselves for a while before they arrive late to the party, where they unfortunately repeat the mistakes made before and cause inflammation and misery. You may rightfully ask now: Why do your own immune cells do this?
