[Electron microscopic observations on the interrelationship of the cell and virus in tumors].
D000818:Animals; D066298:In Vitro Techniques; D008325:Mammary Neoplasms, Experimental / Q000382:microbiology*; D051379:Mice; D008854:Microscopy, Electron; D009858:Oncogenic Viruses / Q000472:pathogenicity*