Platelets for transfusion: Collection, processing and preservation aspects C. Th. Smit Sibinga Leading Article Pages: 475 - 481
Dihydrofolate reductase-activity in brain tissue Rolf LudwigEva FreiWerner E. Brandeis Original Articles Pages: 483 - 488
Pre CFU-F in bone marrow cultures from children with hematopoietic disease including acute leukemia G. PrindullZ. Ben-IshayB. Prindull Original Articles Pages: 489 - 497
Isolation of a colony-stimulating factor produced by L 1210 murine leukemia cells Augusto PessinaAdriano MuschiatoMaria Grazia Neri Original Articles Pages: 499 - 504
Philadelphia-positive chronic myelogenous leukemia with breakpoint 5′ of the breakpoint cluster region but within the bcr gene Claus R. BartramUlrike Bross-BachHans D. Waller Original Articles Pages: 505 - 511
T-lymphocyte colony formation of murine thymocytes in agar contained in glass capillaries H. P. MatthiessenC. EchartiH. R. Maurer Short Communications Pages: 517 - 522
Diphenylhydantoin (DPH) Blocks HIV Receptor on T-Lymphocyte Surface K. Ghosh Letter To The Editor Pages: 523 - 523
Diphenylhydantoin (DPH) Blocks HIV Receptor on T-Lymphocyte Surface J. P. ZimmerH. A. Lehr Authors' Reply Pages: 524 - 524