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Histamine

//ˈhɪstəmiːn// noun

Definitions

Noun
  1. 1
    An amine, C₅H₉N₃, formed by decarboxylation of histidine, that causes dilatation of capillaries, contraction of smooth muscle, and stimulation of gastric acid secretion; it is released during allergic reactions. countable, uncountable

    "Mellanby and Twort have isolated from the fæces a bacillus which is able to produce from one of the amino acids normally formed in digestion of proteins a highly active body, histamine."

  2. 2
    amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the human immune system during allergic reactions wordnet

Etymology

From hist(idine) + -amine.

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