1. Cocarcinogens of the diterpene ester type fromCroton flavens L. and esophageal cancer in Curaçao

   • J. Weber
   • E. Hecker

   Specialia Pages: 679 - 682

2. Isotrinervi-2β-ol. Structural isomers in the defense secretions of allopatric populations of the termiteTrinervitermes gratiosus

   • G. D. Prestwich

   Specialia Pages: 682 - 684

3. The scent scale substances of malePieris butterflies (Pieris melete andPieris napi)

   • N. Hayashi
   • Y. Kuwahara
   • H. Komae

   Specialia Pages: 684 - 685

4. The association between N-acetyl-neuraminic acid and calcium ions in aqueous solution

   • M. N. Jones

   Specialia Pages: 685 - 687

5. 26-Hydroxy-β-ecdysone, a metabolite of β-ecdysone in the blowfly,Calliphora erythrocephala

   • D. R. Greenwood
   • G. B. Russell

   Specialia Pages: 687 - 688

6. L-Azetidine-2-carboxylic acid, the antidermatophyte constituent of two marine sponges

   • B. Bach
   • R. P. Gregson
   • J. L. Reichelt

   Specialia Pages: 688 - 688

7. On the solvent-extraction of acetylcholine receptor

   • J. P. Christopher
   • D. B. Millar
   • Melba A. Grafius

   Specialia Pages: 689 - 691

8. Induction of epidermal cell proliferation by a tumour promoter in vitamin B₆-deficient mice

   • A. W. Murray

   Specialia Pages: 691 - 691

9. Activation and specificity of alkaline phosphatase of a mineralizing collagen-rich system

   • J. Althoff
   • P. Quint
   • H. J. Höhling

   Specialia Pages: 692 - 693

10. Glycosaminoglycans in separated tubules of the guinea-pig and rat kidney medulla

    • Dora Lis
    • B. Monis

    Specialia Pages: 693 - 695

11. Ionic effects on cyclic nucleotide accumulation in a phytophagous insect

    • D. P. Taylor
    • R. W. Newburgh

    Specialia Pages: 695 - 696

12. ³⁵S-Sulphate incorporation into myelin sulphated mucopolysaccharides during rat brain development

    • Mirjana Rusić
    • Milica Levental
    • Ljubiša Rakić

    Specialia Pages: 696 - 697

13. The metabolism of dibenz[b,f]-1,4-oxazepine (CR): In vivo hydroxylation of 10,11-dihydrodibenz[b,f]-1,4-oxazepin-11-(1OH)-one and the NIH shift

    • J. M. Harrison
    • R. J. Clarke
    • D. G. Upshall

    Specialia Pages: 698 - 699

14. Conversion ofβ-sitosterol into both fucosterol andisofucosterol inTenebrio molitor

    • F. Nicotra
    • F. Ronchetti
    • G. Russo

    Specialia Pages: 699 - 700

15. Disaccharidase rhythm in rat small intestine; no relationship with mitosis rhythm

    • Masayuki Saito
    • Masami Suda

    Specialia Pages: 700 - 701

16. Adenylate kinase fromRhodospirillum rubrum

    • H. S. Yang
    • M. C. Archer

    Specialia Pages: 702 - 702

17. Chemical synthesis of a hexadecapeptide segment of ubiquitin that activates adenylate cyclase and induces lymphocytes to differentiate

    • D. H. Schlesinger
    • G. Goldstein
    • M. Bitensky

    Specialia Pages: 703 - 704

18. Inhibition of liver fructose 1,6-bisphosphatase activity by Zn²⁺: Reversal by imidazole pyruvate

    • P. F. Han
    • G. Y. Han
    • J. Johnson Jr

    Specialia Pages: 704 - 705

19. Karyotype and centric dissociation in water voleArvicola sapidus spp.sapidus Miller 1908 (Rodentia, Muridae)

    • R. Diaz de la Guardia
    • A. Pretel

    Specialia Pages: 706 - 708

20. Chromosomal translocations in 2 Italian populations ofReticulitermes lucifugus (Rossi) (Insecta, Isoptera: Rhinotermitidae)

    • F. Fontana
    • M. Amorelli

    Specialia Pages: 708 - 709

21. Chlorpyrifos (Dursban^®) resistance inCulex pipiens pipiens L. from Southern France: Inheritance and linkage

    • Nicole Pasteur
    • G. Sinègre

    Specialia Pages: 709 - 711

22. Lysine estimation with the modified Udy-dye binding method in hexaploid wheat

    • M. Iqbal Khan

    Specialia Pages: 711 - 712

23. Down syndrome — transferrin parallels plasma iron changes

    • J. Kędziora
    • H. Witas
    • D. Rożynkowa

    Specialia Pages: 712 - 713

24. Time-qualified reference intervals — chronodesms

    • F. Halberg
    • Jung Keun Lee
    • W. Nelson

    Specialia Pages: 713 - 716

25. Differential scanning calorimetry of rat liver mitochondria

    • D. Bach
    • I. Bursuker
    • I. R. Miller

    Specialia Pages: 717 - 718

26. Gas chromatographic evidence of the antheridiogen ofLygodium japonicum (A_LY) (Schizaeaceae)

    • K. Bürcky
    • A. Gemmrich
    • H. Schraudolf

    Specialia Pages: 719 - 719

27. The site of 25-hydroxycholecalciferol stimulated protein synthesis in the rat kidney

    • M. Cochran

    Specialia Pages: 719 - 720

28. Agglutination of erythrocytes using lectin-labeled spacers

    • M. Horisberger

    Specialia Pages: 721 - 722

29. Effect of albendazole on the metacestodes ofTaenia saginata in calves

    • S. Lloyd
    • E. J. L. Soulsby
    • V. J. Theodorides

    Specialia Pages: 723 - 724

30. The level of action of 2,4-D on transcription

    • S. Sen

    Specialia Pages: 724 - 724

31. Variability in saffron (Crocus sativus L.)

    • A. Estilai

    Specialia Pages: 725 - 725

32. Similar paracrystals of endoplasmic reticulum in the photoemitters and the photoreceptors of scale-worms

    • J. M. Bassot
    • M. T. Nicolas

    Specialia Pages: 726 - 728

33. Protein digestion in the sea gooseberryPleurobranchia bachei A. Agassiz (Ctenophora: Tentaculata)

    • P. V. Fankboner
    • R. G. B. Reid

    Specialia Pages: 728 - 729

34. Self-suturing by a synaptid sea cucumber (Holothuroidea: Echinodermata)

    • P. V. Fankboner

    Specialia Pages: 729 - 730

35. Damage by ozone to the mechanical integrity of the protoplast plasmalemma

    • M. Cailloux
    • C. T. Phan
    • Y. S. Chung

    Specialia Pages: 730 - 731

36. HCO ₃ ⁻ -ATPase activity distribution in rat liver cell fractions prepared by zonal centrifugation

    • K. T. Izutsu
    • I. A. Slegel
    • E. A. Smuckler

    Specialia Pages: 731 - 733

37. Anthelmintic activity of tioxidazole (Sch 21480) against gastrointestinal roundworms

    • E. Panitz
    • P. J. L. Daniels
    • J. A. Waitz

    Specialia Pages: 733 - 733

38. On the residual water content of dried but viable cells

    • J. S. Clegg
    • A. C. Zettlemoyer
    • H. H. Hsing

    Specialia Pages: 734 - 735

39. Effect of ethylene glycol on transcription ofNeurospora crassa conidial genome

    • R. K. Chaudhuri

    Specialia Pages: 735 - 736

40. Relationship between regeneration of cell surface glycoproteins in trypsin-treated chick embryo fibroblasts and cell adhesion to the substratum

    • M. Vernay
    • M. Cornic
    • R. Bourrillon

    Specialia Pages: 736 - 737

41. A promoting action of cyclic GMP on contractions of guinea-pig vas deferens

    • J. E. S. Wikberg
    • R. G. G. Andersson

    Specialia Pages: 737 - 739

42. A radioenzymatic method to measure picogram amounts of dopamine and 3,4-dihydroxyphenylacetic acid (DOPAC) in small samples of brain tissue

    • A. Argiolas
    • F. Fadda

    Specialia Pages: 739 - 741

43. Effect of chronic alloxan diabetes and insulin administration on intestinal brush border enzymes

    • A. Mahmood
    • R.M. Pathak
    • N. Agarwal

    Specialia Pages: 741 - 742

44. Sex difference in polyethylenglycol-induced thirst

    • M. Vijande
    • M. Costales
    • B. Marin

    Specialia Pages: 742 - 743

45. Phosphoinositide content in the erythrocyte membrane of rats with spontaneous and renal hypertension

    • G. M. Boriskina
    • P. V. Gulak
    • Yu. V. Postnov

    Specialia Pages: 744 - 744

46. Bayliss myogenic response in the isolated ductus arteriosus of guinea-pig and rabbit fetuses

    • V. Smieško
    • M. Kriška
    • V. Kovalčík

    Specialia Pages: 745 - 746

47. Possible significance of aminotransferases in tissues of the aestivating fresh water mussel,Lamellidens marginalis (Lamarck)

    • Md. R. Begum
    • K. V. Ramana Rao

    Specialia Pages: 746 - 747

48. Mise en évidence de l'excrétion urinaire d'antigènes de la membrane basale glomerulaire (MBG) dans l'urine de 3 rongeurs (rat, souris et cobaye)

    • J. Cambar
    • Y. Piquet
    • Y. Mesnier

    Specialia Pages: 747 - 748

49. Distribution of radioactivity after administration of³H-5-hydroxytryptamine by three different routes to the musselMytilus edulis

    • G. B. Stefano
    • E. Aiello

    Specialia Pages: 749 - 750

50. Changes in cholinesterase activity of muscle after crushing the sciatic nerve of rats

    • H. Kobayashi
    • K. Hasegawa
    • M. Kikuno

    Specialia Pages: 750 - 751