title: [Ultrastructural observation of xenotropic C-type viruses invading rat hepatoma (BERH-2) after passage in nude mice].
mesh_terms: D000818:Animals; D005260:Female; D008114:Liver Neoplasms, Experimental / Q000648:ultrastructure*; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D009368:Neoplasm Transplantation; D051381:Rats; D011919:Rats, Inbred Strains; D012190:Retroviridae; D014183:Transplantation, Heterologous; D014412:Tumor Virus Infections / Q000473:pathology*