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 => a cytidine-thymine dinucleotide in dna