ELECTRON MICROSCOPY OF VIRUS PARTICLES IN CELL  CULTURES INOCULATED WITH PASSAGE FLUID FROM HUMAN LEUKAEMIC BONE-MARROW.
D001853:Bone Marrow; D004583:Electrons; D004622:Embryo, Mammalian; D004625:Embryo, Nonmammalian; D007668:Kidney; D007938:Leukemia; D008853:Microscopy; D008854:Microscopy, Electron; D009858:Oncogenic Viruses; D046509:Tissue Culture Techniques; D014771:Virion; D014776:Virus Cultivation
BONE MARROW; EMBRYO; KIDNEY; LEUKEMIA; MICROSCOPY, ELECTRON; ONCOGENIC VIRUSES; TISSUE CULTURE; VIRUS CULTIVATION