title: Induction of dihydrofolate reductase activity by SV40 and polyoma virus.
mesh_terms: D000818:Animals; D046508:Culture Techniques; D000882:Haplorhini; D007668:Kidney; D051379:Mice; D011120:Polyomavirus; D011691:Puromycin / Q000494:pharmacology; D013539:Simian virus 40; D018139:Simplexvirus; D013762:Tetrahydrofolate Dehydrogenase; D013937:Thymidine Kinase; D014616:Vaccinia virus
chemical_list: D011691:Puromycin; D013762:Tetrahydrofolate Dehydrogenase; D013937:Thymidine Kinase