title: Tumorigenic activity of cloned polyoma virus DNA in newborn rats.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D003001:Cloning, Molecular; D004279:DNA, Viral / Q000235:genetics*; D009374:Neoplasms, Experimental / Q000209:etiology*; D011120:Polyomavirus; D051381:Rats; D014412:Tumor Virus Infections / Q000209:etiology*
chemical_list: D004279:DNA, Viral