1. Announcement

   Announcement Pages: i - i

2. Gene therapy

   • Martin J. Cline

   Current Thinking Pages: 3 - 10

3. Mechanism, regulation and physiological significance of the loop diuretic-sensitive NaCl/KCl symport system in animal cells

   • Milton H. Saier Jr.
   • David A. Boyden

   Review Pages: 11 - 32

4. Delta crystallins and their nucleic acids

   • Joram Piatigorsky

   Review Pages: 33 - 56

5. Hepatic proliferation inhibitor

   • P. Thomas Iype
   • James B. McMahon

   Review Pages: 57 - 80

6. Nuclear protein kinases

   • Harry R. Matthews
   • Verena D. Huebner

   Review Pages: 81 - 99

7. Characteristics of an ADP receptor mediating platelet activation

   • Robert W. Colman
   • William R. Figures

   Review Pages: 101 - 111

8. Age-related effects in enzyme catalysis

   • Art Gafni
   • Noa Noy

   Review Pages: 113 - 129

9. Messenger RNA in regenerating liver: implications for the understanding of regulated growth

   • Nelson Fausto

   Review Pages: 131 - 147

10. Thialysine utilization by a lysine-requiring Escherichia coli mutant

    • C. Cinia
    • V. Busiello
    • C. de Marco

    OriginalPaper Pages: 149 - 154

11. A convener role for the cnxH gene specified component in the NADPH-nitrate reductase from Aspergillus nidulans

    • Ronald Downey
    • Paul Wiehl

    OriginalPaper Pages: 155 - 163

12. Characterization and inhibition of dihydrofolate synthetase from Neisseria gonorrhoeae

    • Sunanta Pongsamart
    • Richard I. Ho
    • William O. Foye

    OriginalPaper Pages: 165 - 171

13. Ca²⁺ and Mg²⁺ requirements for growth are not concomitantly reduced during cell transformation

    • Solange M. F. Ribeiro
    • Hugo A. Armelin

    OriginalPaper Pages: 173 - 181

14. The effect of cortisol on rabbit red cell acid phosphatase isoenzymes

    • Grażyna Szajerka
    • Janina Kwiatkowska

    OriginalPaper Pages: 183 - 186