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his·ta·mine

n :  a compound C5H9N3 esp. of mammalian tissues that causes dilatation of capillaries, contraction of smooth muscle, and stimulation of gastric acid secretion, that is released during allergic reactions, and that is formed by decarboxylation of histidine his*ta*min*ic adj 
 
   

 
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South Lincoln Medical Center (Kemmerer, Wyoming - Lincoln County)