noun 다운로드 🔗공유 구아닌 A substance first obtained from guano; it is a nucleic base and pairs with cytosine in DNA and RNA (by means of three hydrogen bonds). Examples : "The scientist studied the guanine content in the DNA samples from the ancient fossils. " 과학자는 고대 화석에서 채취한 DNA 샘플의 구아닌 함량을 연구했다. biochemistry biology chemistry substance compound AI와 채팅어휘 게임독해 연습