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cytosine: Meaning and Definition of

cy•to•sine

Pronunciation: (sī'tu-sēn", -zēn", -sin), [key]
— n. Biochem.
  1. a pyrimidine base, CHNO, that is one of the fundamental components of DNA and RNA, in which it forms a base pair with guanine. Symbol: C Cf. cytidine, cytidine monophosphate.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
cytoplast cytosine arabinoside
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