What are mast cells and write their function?

1.	What are mast cells and write their function?
Answer» Mast cell, tissue\xa0cell\xa0of the immune system of vertebrate animals.\xa0Mast cells\xa0mediate inflammatory responses such as hypersensitivity and allergic reactions. ... Upon stimulation by an allergen, the\xa0mast cells\xa0release the contents of their granules (a process called degranulation) into the surrounding tissues.\xa0Mast cells\xa0serve\xa0the\xa0same general\xa0functions\xa0in\xa0the\xa0body and central nervous system, such as effecting or regulating allergic responses, innate and adaptive immunity, autoimmunity, and inflammation. Across systems,\xa0mast cells\xa0serve as\xa0the\xa0main effector\xa0cell\xa0through which pathogens can affect\xa0the\xa0gut–brain axis.

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