1. Platelets for transfusion: Collection, processing and preservation aspects

   • C. Th. Smit Sibinga

   Leading Article Pages: 475 - 481

2. Book reviews

   • H. P. Wagner
   • U. Bucher

   BookReview Pages: 482 - 482

3. Dihydrofolate reductase-activity in brain tissue

   • Rolf Ludwig
   • Eva Frei
   • Werner E. Brandeis

   Original Articles Pages: 483 - 488

4. Pre CFU-F in bone marrow cultures from children with hematopoietic disease including acute leukemia

   • G. Prindull
   • Z. Ben-Ishay
   • B. Prindull

   Original Articles Pages: 489 - 497

5. Book reviews

   • H. H. Euler
   • H. Löffler
   • R. Arnold

   BookReview Pages: 498 - 498

6. Isolation of a colony-stimulating factor produced by L 1210 murine leukemia cells

   • Augusto Pessina
   • Adriano Muschiato
   • Maria Grazia Neri

   Original Articles Pages: 499 - 504

7. Philadelphia-positive chronic myelogenous leukemia with breakpoint 5′ of the breakpoint cluster region but within the bcr gene

   • Claus R. Bartram
   • Ulrike Bross-Bach
   • Hans D. Waller

   Original Articles Pages: 505 - 511

8. Book review

   • J. P. Johnson

   BookReview Pages: 512 - 512

9. Annular promyelocytes in acute myeloid leukemia

   • M. Peichev

   Short Communications Pages: 513 - 515

10. Book review

    • V. Sachs

    BookReview Pages: 516 - 516

11. T-lymphocyte colony formation of murine thymocytes in agar contained in glass capillaries

    • H. P. Matthiessen
    • C. Echarti
    • H. R. Maurer

    Short Communications Pages: 517 - 522

12. Diphenylhydantoin (DPH) Blocks HIV Receptor on T-Lymphocyte Surface

    • K. Ghosh

    Letter To The Editor Pages: 523 - 523

13. Diphenylhydantoin (DPH) Blocks HIV Receptor on T-Lymphocyte Surface

    • J. P. Zimmer
    • H. A. Lehr

    Authors' Reply Pages: 524 - 524