title: Membrane alterations which accompany MuMTV maturation. I. Studies by freeze-cleave techniques.
mesh_terms: D000818:Animals; D002462:Cell Membrane / Q000382:microbiology; D005260:Female; D005613:Freeze Etching; D008325:Mammary Neoplasms, Experimental / Q000473:pathology; D008324:Mammary Tumor Virus, Mouse / Q000254:growth & development* / Q000302:isolation & purification; D051379:Mice; D008854:Microscopy, Electron