1. Editorial

   EditorialNotes Pages: I - I

2. Meetings calendar

   Events Pages: III - IV

3. Expression of the pre-S(2) gene of hepatitis B virus inEscherichia coli

   • K. Tachibana
   • M. Imai
   • M. Yamasaki

   OriginalPaper Pages: 677 - 682

4. Growth of hybridoma cells under different agitation conditions

   • Timothy C. Dodge
   • Wei Shou Hu

   OriginalPaper Pages: 683 - 686

5. Effect of growth rate on the maintenance of a recombinant plasmid inBacillus subtilis

   • T. G. Watson
   • A. Pinches
   • M. E. Louw

   OriginalPaper Pages: 687 - 690

6. Production and conversion of chitosan with cultures of Mucor rouxii or Phycomyces blakesleeanus

   • Dietrich Knorr
   • Joachim Klein

   OriginalPaper Pages: 691 - 694

7. Optimization and preliminary characterization of an exopolysaccharide synthezised by Enterobacter sakazakii

   • M. Scheepe-Leberkühne
   • F. Wagner

   OriginalPaper Pages: 695 - 700

8. Rapid method for estimation of killer toxin activity in yeasts

   • Radim Špaček
   • Vladimír Vondrejs

   OriginalPaper Pages: 701 - 706

9. Continuous bacterial ferrous iron oxidation by Thiobacillus ferrooxidans in rotating biological contactors

   • L. Nikolov
   • D. Mehochev
   • D. Dimitrov

   OriginalPaper Pages: 707 - 710

10. Cadmium adsorption by bacterial capsular polysaccharide coatings

    • J. A. Scott
    • G. K. Sage
    • D. S. Powell

    OriginalPaper Pages: 711 - 714

11. High density cell culture ofRhodotorula glutinis using oxygen-enriched air

    • Jae Gu Pan
    • Moo Young Kwak
    • Joon Shick Rhee

    OriginalPaper Pages: 715 - 718

12. A simple device to measure biogas production in laboratory scale digesters

    • J. Mata-Alvarez
    • A. Mtz-Viturtia
    • R. Torres

    BriefCommunication Pages: 719 - 720

13. Immobilization of cells via activated cell walls

    • M. Marek
    • J. Káš
    • Z. Vodrážka

    OriginalPaper Pages: 721 - 724

14. Continuous product recovery by in-situ gas stripping/condensation during solvent production from whey permeate usingClostridium acetobutylicum

    • B M Ennis
    • C T Marshall
    • A H J Paterson

    OriginalPaper Pages: 725 - 730

15. Ethanol separation from molasses based fermentation broth by reverse osmosis

    • J. P. Choudhury
    • P. Ghosh
    • B. K. Guha

    OriginalPaper Pages: 731 - 734

16. Control of ethanol production by yeast: Role of pyruvate decarboxylase and alcohol dehydrogenase

    • Suresh Sharma
    • P. Tauro

    OriginalPaper Pages: 735 - 738

17. Rapid ethanol fermentation with immobilized Zymomonas mobilis in a three stage reactor system

    • J. Klein
    • B. Kressdorf

    OriginalPaper Pages: 739 - 744

18. High yield conversion of sucrose into ethanol by a flocculentZymomonas sp isolated from sugarcane juice

    • Emilio Rodríguez
    • Danley A. S. Callieri

    OriginalPaper Pages: 745 - 748

19. SO₂-catalysed prehydrolysis of coniferous wood for ethanol production

    • Morris Wayman
    • Sarad Parekh
    • Ralph P. Overend

    OriginalPaper Pages: 749 - 752

20. Comparison of different strains ofCellulomonas for production of cellulolytic and xylanolytic enzymes from biomass produced on saline lands

    • M. Ibrahim Rajoka
    • Kauser A. Malik

    OriginalPaper Pages: 753 - 756