title: Analysis of 5-methylcytosine in DNA. I. Mass spectrometry.
mesh_terms: D000818:Animals; D002417:Cattle; D003090:Coliphages; D003596:Cytosine / Q000031:analogs & derivatives* / Q000032:analysis; D004247:DNA; D004279:DNA, Viral; D013058:Mass Spectrometry / Q000379:methods; D013950:Thymus Gland
chemical_list: D004279:DNA, Viral; D003596:Cytosine; D004247:DNA