1. Isolation of mutants of the cyanobacterium,Anabaena variabilis, impaired in photoautotrophy

   • Paul W. Shaffer
   • Wolfgang Lockau
   • C. Peter Wolk

   OriginalPaper Pages: 215 - 219

2. Some ring-trap mutants of the fungusDactylella brochopaga drechsler

   • J. P. Insell
   • K. Zachariah

   OriginalPaper Pages: 221 - 226

3. Morphology of freeze-etchedTreponema refringens (Nichols)

   • Eric D. Zemper
   • S. H. Black

   OriginalPaper Pages: 227 - 238

4. Plasma-Membrane lipid composition and ethanol tolerance inSaccharomyces cerevisiae

   • D. Susan Thomas
   • J. A. Hossack
   • A. H. Rose

   OriginalPaper Pages: 239 - 245

5. Nitrate and nitrite reductase negative mutants of N₂-fixingAzospirillum spp.

   • Luis M. S. Magalhães
   • Carlos A. Neyra
   • Johanna Döbereiner

   OriginalPaper Pages: 247 - 252

6. Investigations of the pigments fromCytophaga johnsonae Cy j1

   • Hans Achenbach
   • Werner Kohl
   • Hans Reichenbach

   OriginalPaper Pages: 253 - 257

7. Effect of carbon source on enzymes involved in glycerol metabolism inNeurospora crassa

   • Gary D. Tom
   • M. Viswanath-Reddy
   • H. Branch Howe Jr.

   OriginalPaper Pages: 259 - 263

8. Lysogeny in the blue-green algaNostoc muscorum

   • R. N. Padhy
   • P. K. Singh

   OriginalPaper Pages: 265 - 268

9. Metabolism of the anaerobic formation of succinic acid bySaccharomyces cerevisiae

   • E. Heerde
   • F. Radler

   OriginalPaper Pages: 269 - 276

10. Influence of culture parameters on lignin metabolism byPhanerochaete chrysosporium

    • T. K. Kirk
    • E. Schultz
    • J. G. Zeikus

    OriginalPaper Pages: 277 - 285

11. Purification and properties of an extracellular endo-1,4-β-glucanase fromLenzites trabea

    • D. Herr
    • F. Baumer
    • H. Dellweg

    OriginalPaper Pages: 287 - 292

12. Disappearence of the intracytoplasmic membranes inRhodopseudomonas sphaeroides

    • Olov Holmqvist

    OriginalPaper Pages: 293 - 295

13. Fine structural localization of alkaloid synthesis in endoplasmic reticulum of submergedClaviceps purpurea

    • Josef Voříšek
    • Zdeněk Řeháček

    OriginalPaper Pages: 297 - 302

14. Composition, secretion kinetics and radioactive labelling of the extracellular slime polysaccharide secreted during spherulation ofPhysarum polycephalum

    • Kurt Zaar

    OriginalPaper Pages: 303 - 308

15. Triple catabolic pathways for glucose in a fast-growing strain ofThiobacillus A2

    • Ann P. Wood
    • D. P. Kelly

    Short Communications Pages: 309 - 310