1. The role of nucleoside phosphorylases in the degradation of deoxyribonucleosides by thymine-requiring mutants of E. coli

   • I. R. Beacham
   • R. H. Pritchard

   OriginalPaper Pages: 289 - 298

2. Induction of prophage λ in a mutant of E. coli K12 defective in initiation of DNA replication at high temperature

   • Marilyn Monk
   • Julian Gross

   OriginalPaper Pages: 299 - 306

3. Modifications de la haute fréquence de réversion du mutant nic-2 chez le Coprinus radiatus

   • J. L. Guerdoux

   OriginalPaper Pages: 307 - 326

4. X-Ray study of competence development in Bacillus subtilis

   • H. T. Epstein

   OriginalPaper Pages: 327 - 331

5. X-Irradiation sensitivity in Escherichia coli defective in DNA replication

   • Walton L. Fangman
   • Marjorie Russel

   OriginalPaper Pages: 332 - 347

6. On the effect of caffeine on mutation and recombination in Schizosaccharomyces pombe

   • Nicola Loprieno
   • Martin Schüpbach

   OriginalPaper Pages: 348 - 354

7. Transformation to auxin-autotrophy and its reversibility in a mutant line of Crepis capillaris callus culture

   • M. D. Sacristán
   • M. F. Wendt-Gallitelli

   OriginalPaper Pages: 355 - 360

8. Influence of ethidium bromide on respiration in Schizosaccharomyces pombe

   • R. Schwab
   • M. Sebald
   • F. Kaudewitz

   OriginalPaper Pages: 361 - 366

9. A biological assay for intracellular SPP1 DNA

   • G. Klotz
   • H. Ch. Spatz

   OriginalPaper Pages: 367 - 373

10. Protection of irradiated lambda phage by methylated proflavine

    • A. Jaffe-Brachet

    Short Communication Pages: 374 - 377

11. A method for detection of phage mutants with altered transducing ability

    • H. Schmieger

    Short Communication Pages: 378 - 381