title: Virus-like particles in Rous rat sarcoma.
mesh_terms: D000818:Animals; D001358:Avian Sarcoma Viruses; D003560:Cysts / Q000382:microbiology; D006470:Hemorrhage; D008854:Microscopy, Electron; D051381:Rats; D001357:Sarcoma, Avian / Q000382:microbiology*