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A compound that is one of the four constituent bases of nucleic acids. A pyrimidine derivative, it is paired with adenine in double-stranded DNA.
- ‘The film's name comes from the initials of the four DNA bases of our genetic code: guanine, adenine, cytosine and thymine.’
- ‘Of the four bases that make up DNA - adenine, thymine, cytosine and guanine - only cytosine has the potential to be methylated in humans and most mammals.’
- ‘The nitrogen-containing bases are adenine, thymine, cytosine, and guanine; these names are used to identify the nucleotides.’
- ‘In DNA the bases pair to form a ladder-like structure, with adenine paired with thymine and guanine with cytosine.’
- ‘The derivatives of purine are called adenine and guanine, and the derivatives of pyrimidine are called thymine, cytosine and uracil.’
Late 19th century: from thymus + -ine.
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