a cytidine-thymine dinucleotide in DNA => a cytidine(6-4)thymidine in DNA
a cytidine-thymine dinucleotide in dna => a cytidine(6-4)thymidine in dna
a cytidine-thymine dinucleotide in DNA => a cytidine(6-4)thymidine in DNA
a cytidine-thymine dinucleotide in dna => a cytidine(6-4)thymidine in dna