Mast cells in autoimmune disease Nature Mast Cell Activation Syndrome (MCAS) Gordon Medical Associates Intestinal mast cellderived leukotrienes mediate the anaphylactic response to ingested antigens Science Mast cell specific CysLT2 receptor signaling inhibits cysteinyl leukotriene dependent mast cell activation and type 2 allergic lung inflammation: Cell Reports Mast cell activation syndrome (MCAS) is one of the most misunderstood conditions I see in my telehealth functional medicine clinic. and it's often the missing piece for people who feel like they're