title: Virology: United States-Soviet Health Exchange visit 1967.
mesh_terms: D000256:Adenoviridae; D001358:Avian Sarcoma Viruses / Q000472:pathogenicity; D002471:Cell Transformation, Neoplastic; D006378:Helper Viruses; D007391:International Cooperation; D007938:Leukemia / Q000209:etiology; D009052:Leukemia Virus, Murine; D008967:Molecular Biology; D012106:Research; D012526:Satellite Viruses; D013539:Simian virus 40; D014586:USSR; D014481:United States; D014773:Virology