1. The international validation study of the acute toxic class method (oral)

   • E. Schlede
   • U. Mischke
   • D. Kayser

   Original Investigation Pages: 659 - 670

2. An approach for evaluating the respiratory irritation of mixtures: application to metalworking fluids

   • M. M. Schaper
   • K. A. Detwiler-Okabayashi

   Original Investigation Pages: 671 - 676

3. Effect of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) on tryptophan and glucose homeostasis in the most TCDD-susceptible and the most TCDD-resistant species, guinea pigs and hamsters

   • Mikko Unkila
   • Marjatta Ruotsalainen
   • Jouko Tuomisto

   Original Investigation Pages: 677 - 683

4. Aspirin-like drugs can protect human T lymphocytes against benzoquinone cytotoxicity:

   • Eliezer Flescher
   • Carroll A. Snyder

   Original Investigation Pages: 684 - 689

5. Comparative effects of two dithiocarbamates disulfiram and thiram, on adrenal catecholamine content and on plasma dopamine-β-hydroxylase activity

   • Stefano Caroldi
   • Paola De Paris

   Original Investigation Pages: 690 - 693

6. Effect of methyl isocyanate on rabbit cardiac Na⁺, K⁺-ATPase

   • K. Jeevaratnam

   Original Investigation Pages: 694 - 697

7. Characterization of the arteritis induced by infusion of rats with UK-61,260, an inodilator, for 24 h

   • Gilles Hanton
   • Jean -Loic Le Net
   • Bernard Leblanc

   Original Investigation Pages: 698 - 704

8. Triphenylphosphite neuropathy in hens

   • F. Fioroni
   • A. Moretto
   • M. Lotti

   Original Investigation Pages: 705 - 711

9. Effect of DMPS and various adsorbents on the arsenic excretion in guinea-pigs after injection with As₂O₃

   • Franz-Xaver Reichl
   • Göran Hunder
   • Wolfgang Forth

   Original Investigation Pages: 712 - 717

10. Effect of lead on tube formation by cultured human vascular endothelial cells

    • Takuji Kishimoto
    • Tetsuhisa Oguri
    • Manabu Tada

    Short Communication Pages: 718 - 721

11. Inhibition of γ-glutamyltranspeptidase decreases renal deposition of mercury after mercury vapor exposure

    • C. -Y. Kim
    • C. Watanabe
    • H. Satoh

    Short Communication Pages: 722 - 724

12. Hydrolysis rates of pyrrolizidine alkaloids derived from Senecio jacobaea

    • S. R. Dueker
    • M. W. Lamé
    • H. J. Segall

    Short Communication Pages: 725 - 728

13. The biometrical evaluation of the OECD modified version of the acute toxic class method (oral)

    • W. Diener
    • U. Mischke
    • D. Kayser

    Letter to the Editor Pages: 729 - 734

14. Acknowledgement to referees

    Announcement Pages: 735 - 735