1. Molecular evolution in bacteria

   • J. T. Trevors

   Review Paper Pages: 315 - 324

2. The fine structure of ascospore shape and development inCeratocystis fimbriata

   • C. de Beer
   • P. W. J. van Wyk
   • G. H. J. Kemp

   Research Papers Pages: 325 - 332

3. Inorganic-ion resistance by bacteria isolated from a Mexico City freeway

   • Sergio Vaca Pacheco
   • Raúl Miranda
   • Carlos Cervantes

   Research Papers Pages: 333 - 337

4. Thermophilic actinomycetes in cane sugar mills: an aeromicrobiologic and seroepidemiologic study

   • Z. U. Khan
   • Madhurama Gangwar
   • H. S. Randhawa

   Research Papers Pages: 339 - 344

5. Localization of the enzymes involved in H₂ and formate metabolism inSyntrophospora bryantii

   • Xiuzhu Dong
   • Alfons J. M. Stams

   Research Papers Pages: 345 - 350

6. A new genetically isolated population of theSaccharomyces sensu stricto complex from Brazil

   • Gennadi I. Naumov
   • Elena S. Naumova
   • Edward J. Louis

   Research Papers Pages: 351 - 355

7. Enzymatic properties of lipase and characteristics production byLactobacillus delbrueckii subsp.bulgaricus

   • M. M. A. El-Sawah
   • A. A. Sherief
   • Samia M. Bayoumy

   Research Papers Pages: 357 - 362

8. Saccharomyces species assignment by long range ribotyping

   • Robert Messner
   • Hansjörg Prillinger

   Research Papers Pages: 363 - 370

9. Assessment of survival during starvation ofEscherichia coli andKlebsiella pneumoniae in artificial urine: analysis of the kinetics of colony formation

   • O. Julia
   • J. Vives-Rego
   • F. Utzet

   Research Papers Pages: 371 - 375

10. Analysis of flagellin gene expression in flagellar phase variants ofCampylobacter jejuni 81116

    • Piet J. M. Nuijten
    • Leticia Márquez-Magaña
    • Bernard A. M. van der Zeijst

    Research Papers Pages: 377 - 383

11. Cellulose degradation byLeucocoprinus gongylophorus, the fungus cultured by the leaf-cutting antAtta sexdens rubropilosa

    • M. Bacci Jr.
    • M. M. Anversa
    • F. C. Pagnocca

    Short Communication Pages: 385 - 386