title: Electron microscopic study of virus particles in experimentally mixed tumor cells.
mesh_terms: D000818:Animals; D002286:Carcinoma, Ehrlich Tumor / Q000382:microbiology*; D002471:Cell Transformation, Neoplastic; D008325:Mammary Neoplasms, Experimental / Q000382:microbiology*; D008324:Mammary Tumor Virus, Mouse / Q000302:isolation & purification*; D051379:Mice; D008854:Microscopy, Electron; D009374:Neoplasms, Experimental / Q000382:microbiology*; D009858:Oncogenic Viruses / Q000302:isolation & purification*; D012510:Sarcoma 180 / Q000382:microbiology*