Amazon.com: Allergy Research Group ARG Acetyl Glutathione 100 mg Stabilized Bioavailable Glutathione Antioxidant & Immune System Support Well Absorbed Formula 60 Servings 60 Tablets : Health & Household Mast cell responses to pathogens Nature Reviews Immunology Cell'specific immune'modulation of cadmium on murine macrophages and mast cell lines in vitro Research The Mathias Laboratory Department of Nutritional Sciences University of Connecticut 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.