Direct cell to cell transfer of Bittner virus.
D000818:Animals; D002462:Cell Membrane; D003593:Cytoplasm; D008325:Mammary Neoplasms, Experimental / Q000382:microbiology* / Q000473:pathology; D008324:Mammary Tumor Virus, Mouse / Q000254:growth & development*; D051379:Mice; D008854:Microscopy, Electron; D010873:Pinocytosis; D013194:Staining and Labeling