1. Preface

   • Patricia Farnes

   EditorialNotes Pages: vii - vii

2. Edwin E. Osgood—A dedication

   • Donald J. Merchant

   Announcement Pages: ix - ix

3. Lawrence Berman 1909–1968 In memoriam

   • Patricia Farnes

   Announcement Pages: x - x

4. An experimental analysis of factors affecting the localization of embryonic bone marrow

   • Nicholas L. Petrakis
   • Susetta Pons
   • Rose E. Lee

   Part I Hemopoietic Precursors Pages: 3 - 13

5. Kinetic models of hemopoietic stem cell populations

   • L. G. Lajtha

   Part I Hemopoietic Precursors Pages: 14 - 21

6. Characteristics of in vitro colony formation by cells from haemopoietic tissues

   • T. R. Bradley
   • D. Metcalf
   • R. Stanley

   Part I Hemopoietic Precursors Pages: 22 - 35

7. Some studies of erythroid differentiationin vitro

   • Eugene Goldwasser
   • Martin Gross

   Part I Hemopoietic Precursors Pages: 36 - 44

8. Granulocytic chalone and antichalone

   • T. Rytömaa

   Part II Differentiation Controls Pages: 47 - 58

9. The properties of mononuclear phagocytes

   • Zanvil A. Cohn

   Part II Differentiation Controls Pages: 59 - 63

10. Phytomitogens and lymphocyte blastogenesis

    • Barbara E. Barker

    Part II Differentiation Controls Pages: 64 - 79

11. Methods for the study ofin vitro immunization of mouse spleen cells

    • Robert I. Mishell
    • Richard W. Dutton
    • Donald J. Raidt

    Part III Immunoactive Hemic Cells Pages: 83 - 91

12. Effect of a herpes group virus (EBV) on growth of peripheral leukocyte cultures

    • Volker Diehl
    • Gertrude Henle
    • Gertrude Kohn

    Part III Immunoactive Hemic Cells Pages: 92 - 99

13. Human hemapoietic cell lines: A progress report

    • George E. Moore
    • Jun Minowada

    Part III Immunoactive Hemic Cells Pages: 100 - 114

14. Abstracts of Papers Presented at the Nineteenth Annual Meeting of the Tissue Culture Association

    Abstracts Pages: 115 - 174