Real Time Monitoring of Glutathione in Living Cells Reveals that High Glutathione Levels Are Required to Maintain Stem Cell Function: Stem Cell Reports Mast cell stabilisers, leukotriene antagonists and antihistamines: A rapid review of the evidence for their use in COVID 19 The Centre for Evidence Based Medicine Mast cells are hypersensitive immune cells that release histamine and other inflammatory mediatorsoften in response to oxidative stress, environmental toxins, and immune imbalance. Many patients with MCAS have low levels of glutathione. How Mycotoxins Trigger Mast Cell Activation and Brain Inflammation