1. Science policy news

   News 15 December 1989 Pages: 1009 - 1012

2. Developments in biotechnology

   • J. Reiser
   • O. Käppeli

   Multi-Author Review 15 December 1989 Pages: 1013 - 1013

3. Further evidence for the existence of a bottleneck in the metabolism of Saccharomyces cerevisiae

   • L. C. M. Auberson
   • C. V. Ramseier
   • U. von Stockar

   Multi-Author Review 15 December 1989 Pages: 1013 - 1018

4. Kinetic analysis and simulation of glucose transport in plasma membrane vesicles of glucose-repressed and derepressedSaccharomyces cerevisiae cells

   • G. F. Fuhrmann
   • B. Völker
   • M. Potthast

   Multi-Author Review 15 December 1989 Pages: 1018 - 1023

5. Computer optimization of the performance of an anaerobic filter used for purification of highly polluted wastewater from a sugar refinery

   • E. DaPra
   • K. Schneider
   • R. Bachofen

   Multi-Author Review 15 December 1989 Pages: 1024 - 1029

6. CAROLINE I. A new DDC-system for biotechnical process control

   • K. Schneider

   Multi-Author Review 15 December 1989 Pages: 1030 - 1034

7. Biokinetics: Macro- versus micro-approach

   • A. Moser

   Multi-Author Review 15 December 1989 Pages: 1035 - 1041

8. Determination of oxygen gradients in single Ca-alginate beads by means of oxygen-microelectrodes

   • J. Beunink
   • H. Baumgärtl
   • H. -J. Rehm

   Multi-Author Review 15 December 1989 Pages: 1041 - 1047

9. Physical methods for characterization of microbial cell surfaces

   • C. Krekeler
   • H. Ziehr
   • J. Klein

   Multi-Author Review 15 December 1989 Pages: 1047 - 1055

10. Application of living microbial cells entrapped with synthetic resin prepolymers

    • S. Fukui
    • A. Tanaka

    Multi-Author Review 15 December 1989 Pages: 1055 - 1061

11. Solid state fermentation for cephalosporin production by Streptomyces clavuligerus and Cephalosporium acremonium

    • M. F. G. Jermini
    • A. L. Demain

    Multi-Author Review 15 December 1989 Pages: 1061 - 1065

12. Superiority ofPseudomonas chlororaphis B23 nitrile hydratase as a catalyst for the enzymatic production of acrylamide

    • T. Nagasawa
    • K. Ryuno
    • H. Yamada

    Multi-Author Review 15 December 1989 Pages: 1066 - 1070

13. Mixed substrates in environmental biotechnology

    • G. Hamer
    • Th. Egli
    • M. Snozzi

    Multi-Author Review 15 December 1989 Pages: 1070 - 1078

14. The use of Bose-Einstein statistics in analysing the distribution of intracellular organelles: the development of a Bose-Einstein probe

    • N. T. James

    Research Articles 15 December 1989 Pages: 1078 - 1081

15. Mechanical polarization in the air-current sensory hair of a cricket

    • M. Kanou
    • T. Osawa
    • T. Shimozawa

    Research Articles 15 December 1989 Pages: 1082 - 1083

16. Functional similarities in the mechanical design of the aorta in lower vertebrates and mammals

    • C. A. Gibbons
    • R. E. Shadwick

    Research Articles 15 December 1989 Pages: 1083 - 1088

17. A first report of relative movements within the hyoid apparatus during feeding inAnolis equestris (Reptilia: Iguanidae)

    • V. L. Bels
    • V. Goosse

    Research Articles 15 December 1989 Pages: 1088 - 1091

18. Exogenous melatonin: Morphology and kallikrein activity of male Syrian hamster submandibular gland

    • M. Uddin

    Research Articles 15 December 1989 Pages: 1092 - 1096

19. Purification and amino acid sequencing of naturally occurring N-formyl-methionyl oligopeptides from Escherichia coli

    • M. F. Broom
    • D. M. Mellor
    • V. S. Chadwick

    Research Articles 15 December 1989 Pages: 1097 - 1099

20. In vivo degradation of noradrenaline by MAO A in locus coeruleus of the rat

    • M. Blinc
    • M. Dernovšek
    • D. Sket

    Research Articles 15 December 1989 Pages: 1099 - 1102

21. VIP receptors and control of short circuit current in the human intestinal clonal cell line Cl.19A

    • C. Rouyer-Fessard
    • C. Augeron
    • M. Laburthe

    Research Articles 15 December 1989 Pages: 1102 - 1105

22. The influence of in vitro sodium and potassium ion ratio on teleost melanosome intracellular motility

    • D. Burton

    Research Articles 15 December 1989 Pages: 1105 - 1108

23. Determination of cerebrospinal fluid and serum lead levels in patients with amyotrophic lateral sclerosis and other neurological diseases

    • E. Kapaki
    • J. Segditsa
    • C. Papageorgiou

    Research Articles 15 December 1989 Pages: 1108 - 1110

24. Comparative platelet anti-aggregant activity of D-cysteinolic acid analogues

    • M. Satake
    • Y. Chiba
    • C. Iwata

    Research Articles 15 December 1989 Pages: 1110 - 1112

25. Splitting of the circadian activity rhythm in common marmosets (Callithrix j. jacchus Primates)

    • U. Schardt
    • I. Wilhelm
    • H. G. Erkert

    Research Articles 15 December 1989 Pages: 1112 - 1115

26. Number of glucocorticoid receptors in lymphocytes and their sensitivity to hormone action

    • I. E. Petrichenko
    • Yu. A. Shakhov
    • N. V. Perova

    Research Articles 15 December 1989 Pages: 1115 - 1117

27. A gonadotropin releasing hormone analog induces spermiation in intact and hypophysectomized frogs, Rana esculenta

    • S. Minucci
    • L. Di Matteo
    • R. Pierantoni

    Research Articles 15 December 1989 Pages: 1118 - 1121

28. Effects of estradiol on parathyroid cell activity

    • P. Wild
    • E. M. Schraner
    • P. Santini-Willmes

    Research Articles 15 December 1989 Pages: 1121 - 1123

29. Identification of juvenile-hormone-binding proteins on blotted electropherograms using tritiated juvenile hormones

    • J. R. Wiśniewski

    Research Articles 15 December 1989 Pages: 1124 - 1128

30. Suppression of mitogen- and antigen-induced lymphocyte proliferation by lanthanides

    • M. Yamage
    • C. H. Evans

    Research Articles 15 December 1989 Pages: 1129 - 1131

31. Absence of immunosuppression in DBA/2 mice vaccinated withTrypanosoma cruzi treated with actinomycin-D

    • M. Queiroz da Cruz
    • H. M. Bräscher
    • A. Oliveira-Lima

    Research Articles 15 December 1989 Pages: 1131 - 1133

32. Lysosomal mutations increase susceptibility to anaesthetics

    • F. Ahmed
    • L. -G. Lundin
    • J. G. M. Shire

    Research Articles 15 December 1989 Pages: 1133 - 1135

33. Crossing-over and inbreeding depression in attached-X chromosomes of Drosophila hydei

    • P. Hutter
    • H. Gloor

    Research Articles 15 December 1989 Pages: 1136 - 1140

34. Proliferation of primordial germ cells of frogs stimulated by a fraction of granules derived fromRana nigromaculata embryos at the tail-bud stage

    • T. Shirane

    Research Articles 15 December 1989 Pages: 1140 - 1142

35. Separation of photoperiodic and circadian effects on the termination of diapause in the spider mite Tetranychus urticae

    • A. Veerman
    • D. S. Koveos

    Research Articles 15 December 1989 Pages: 1143 - 1146

36. Correlated responses in lines ofDrosophila melanogaster selected for different oviposition behaviours

    • R. Allemand
    • J. Boulétreau-Merle

    Research Articles 15 December 1989 Pages: 1147 - 1150

37. Announcements

    Announcement 15 December 1989 Pages: 1150 - 1150