[Electron microscopy of viruses seen in mouse mammary carcinoma and leukemic tissues. Significance of viruses for an etiologic factor of the neoplasms].
D000818:Animals; D004583:Electrons; D007938:Leukemia / Q000821:virology*; D051379:Mice; D008853:Microscopy; D008854:Microscopy, Electron; D009369:Neoplasms / Q000821:virology*; D014780:Viruses
LEUKEMIA/virology; MICROSCOPY, ELECTRON; NEOPLASMS/virology; VIRUSES