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guanine
- Main Entry:
- gua·nine

- Pronunciation:
-
\ˈgwä-ˌnēn\
- Function:
- noun
- Etymology:
- guano + -ine; from its being found especially in guano
- Date:
- 1850
: a purine base C5H5N5O that codes genetic information in the polynucleotide chain of DNA or RNA
— compare adenine, cytosine, thymine, uracil
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