Pyrimidine nucleosides.
D009705:Nucleosides / Q000737:chemistry*; D009711:Nucleotides / Q000737:chemistry*; D011741:Pyrimidine Nucleosides
D009705:Nucleosides; D009711:Nucleotides; D011741:Pyrimidine Nucleosides
NUCLEOSIDES AND NUCLEOTIDES/chemistry