Ultra Thin Keto . This reaction is triggered by specific IgE allergen-associated antibodies that, when combined with a receptor on the surface of the mast cell (FcεRI), initiate immediate cell degranulation.Histamine, leuktriens, serotonin , prostaglandins and other substances are released that act locally (causing e.g. swelling of the nasal mucosa) or systemically (e.g. causing chronic fatigue ).These reactions are characterized by an immediate course, which means that they occur seconds-minutes from contact with the allergen http://www.sincitygop.com/keto/ultra-thin-keto/