title: Guanine base labeling and length extension of phi X174 DNA.
mesh_terms: D001483:Base Sequence; D003090:Coliphages; D004279:DNA, Viral / Q000032:analysis; D003979:Diazonium Compounds; D006147:Guanine / Q000032:analysis*; D008854:Microscopy, Electron
chemical_list: D004279:DNA, Viral; D003979:Diazonium Compounds; D006147:Guanine