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 neu·rin /-rən/ 名詞

 Neu·rine n.  Physiol. Chem. A poisonous organic base (a ptomaine) formed in the decomposition of protagon with boiling baryta water, and in the putrefaction of proteid matter.  It was for a long time considered identical with choline, a crystalline body originally obtained from bile.  Chemically, however, choline is oxyethyl-trimethyl-ammonium hydroxide, while neurine is vinyl-trimethyl-ammonium hydroxide. [Written also neurin.]
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