histamine has definitions from the fields of biology,medicine,pharmacology,chemistry,physiology,biochemistry
1
[ noun ] (biology,chemistry,physiology,biochemistry) amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the humane immune system during allergic reactions

Related terms

enzyme amine autacoid

2
[ noun ] (biology,medicine,pharmacology) a vasodilator that is released by cells in the human immune system as part of an allergic reaction; also affects the amount of stomach acid released

Related terms

vasodilator

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