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cytosine
[ sahy-tuh-seen, -zeen, -sin ]
noun
, Biochemistry.
- a pyrimidine base, C 4 H 5 N 3 O, that is one of the fundamental components of DNA and RNA, in which it forms a base pair with guanine. : C
cytosine
/ sī′tə-sēn′ /
- A pyrimidine base that is a component of DNA and RNA, forming a base pair with guanine. Chemical formula: C 4 H 5 N 3 O.
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