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单词 cytosine
释义 cytosine
 /suy"teuh seen', -zeen', -sin/, n. Biochem.
 a pyrimidine base, C4H5N3O, 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.
 [ < G Cytosin (1894); see CYTO-, -OSE2, -INE2]
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