1. In vitro modification and restriction of phage Φ105C DNA with Bacillus subtilis N cell-free extract

   • Takehiko Shibata
   • Tadahiko Ando

   OriginalPaper Pages: 269 - 279

2. Accumulation of replicating bacterial plasmid DNA during thymine limitation or hydroxyurea treatment

   • Dan Perlman
   • Robert H. Rownd

   OriginalPaper Pages: 281 - 291

3. The separation of viable rye microspores from mixed populations and their development in culture

   • Gerhard Wenzel
   • Franz Hoffmann
   • Emrys Thomas

   OriginalPaper Pages: 293 - 297

4. Ribosomal proteins of Bacillus subtilis vegetative and sporulating cells

   • Sibajyoti Guha
   • Hans E. Roth
   • Knud Nierhaus

   OriginalPaper Pages: 299 - 307

5. A mammalian spot test: Induction of genetic alterations in pigment cells of mouse embryos with X-rays and chemical mutagens

   • Rudolf Fahrig

   OriginalPaper Pages: 309 - 314

6. Non-enzymatic translocation in ribosomes from streptomycin-resistant mutants of Escherichia coli

   • L. S. Asatryan
   • A. S. Spirin

   OriginalPaper Pages: 315 - 321

7. Conjugational behaviour of N plasmids in Escherichia coli K12

   • Sheena Dennison
   • S. Baumberg

   OriginalPaper Pages: 323 - 331

8. 9-Aminoacridine mutagenesis of bacteriophage T4 intracellular DNA

   • S. Altman
   • V. Warner

   OriginalPaper Pages: 333 - 343

9. Agrocin 84 sensitivity: A plasmid determined property in Agrobacterium tumefaciens

   • G. Engler
   • M. Holsters
   • R. Schilperoort

   OriginalPaper Pages: 345 - 349

10. Enhanced uptake of donor DNA by Ca²⁺ treated Escherichia coli cells

    • A. G. Sabelnikov
    • A. V. Avdeeva
    • B. N. Ilyashenko

    OriginalPaper Pages: 351 - 358

11. A method for isolating nonsense suppressors in enterobacteriaceae using an amber mutant of the drug resistance factor R1

    • Christina Kennedy
    • Ian Crowlesmith

    Short Communication Pages: 359 - 362