略語大辞典 [Bio] 23 C cytosine シトシン. 核酸の塩基成分. cytosine; or oxaminopyrimidine; C4H5N3O; a base composition of DNA(deoxyribonucleic acid) or RNA(ribonucleic acid); ref. A(adenine), G(guanine), T(thimine); [Bio:Chem]. 丸善「略語大辞典」JLogosID : 11868137