title: Clonal growth of leukaemic cells in vitro.
abstract: Human leukaemic cell specimens were obtained from patients and directly plated into soft agar (t = 0) or cultured for 1 week in liquid phase and then plated in soft agar. Growth for 1 week in liquid phase allowed the clonal growth in agar of leukaemic specimens which were unable to clone at t = 0. Clonal growth after liquid culture consisted of the usual leukaemic type of cluster-colonies, growth of a new type of 'syncytial' cell colony or a mixture of colony types. In addition, marrow from a patient with acute lymphocytic leukaemia produced normal-appearing colonies after 1 week of growth in liquid phase. These studies suggest a similarity in the growth requirements of some leukaemic cells and normal CFUd cells.
mesh_terms: D000328:Adult; D000362:Agar; D000368:Aged; D002455:Cell Division; D002478:Cells, Cultured; D002999:Clone Cells / Q000473:pathology*; D003470:Culture Media; D005260:Female; D006801:Humans; D007700:Kinetics; D007938:Leukemia / Q000473:pathology*; D004915:Leukemia, Erythroblastic, Acute / Q000473:pathology; D007951:Leukemia, Myeloid / Q000473:pathology; D015470:Leukemia, Myeloid, Acute / Q000473:pathology*; D007962:Leukocytes / Q000473:pathology; D008264:Macrophages / Q000473:pathology; D008297:Male; D008875:Middle Aged
chemical_list: D003470:Culture Media; D000362:Agar