title: Tumour virus DNA: hazards no longer speculative.
mesh_terms: D004274:DNA, Recombinant; D004279:DNA, Viral; D006801:Humans; D009316:National Institutes of Health (U.S.); D009858:Oncogenic Viruses / Q000235:genetics*; D012107:Research Design / Q000592:standards; D014481:United States
chemical_list: D004274:DNA, Recombinant; D004279:DNA, Viral