1. The median lethal dose and its estimation

   • D. J. Finney

   Original Investigations Pages: 215 - 218

2. Measurements of the cytosolic Ah receptor among four strains of Drosophila melanogaster

   • Sanford W. Bigelow
   • Jakob A. Zijlstra
   • Daniel W. Nebert

   Original Investigations Pages: 219 - 225

3. Genetically mediated induction of aryl hydrocarbon hydroxylase activity in mice by polychlorinated dibenzofuran isomers and 2,3,7,8-tetrachlorodibenzo-p-dioxin

   • Junya Nagayama
   • Hiroaki Kuroki
   • Masanori Kuratsune

   Original Investigations Pages: 226 - 229

4. Genetically mediated induction of aryl hydrocarbon hydroxylase activity in human lymphoblastoid cells by polychlorinated dibenzofuran isomers and 2,3,7,8-tetrachlorodibenzo-p-dioxin

   • Junya Nagayama
   • Chikako Kiyohara
   • Masanori Kuratsune

   Original Investigations Pages: 230 - 235

5. Alteration in RNA synthesis in the dorsal root ganglia of methylmercury-treated rats

   • Satoshi Nagumo
   • Saburo Omata
   • Hiroshi Sugano

   Original Investigations Pages: 236 - 241

6. The influence of administered mass on the subcellular distribution and binding of mercury in rat liver and kidney

   • F. Planas-Bohne
   • D. M. Taylor
   • R. Walser

   Original Investigations Pages: 242 - 246

7. Metallothionein content and zinc status in various tissues of rats treated with iodoacetic acid and zinc

   • Herbert E. Heilmaier
   • Karl H. Summer

   Original Investigations Pages: 247 - 251

8. The effects of dietary selenium on cadmium binding in rat kidney and liver

   • I. S. Jamall
   • J. C. Smith

   Original Investigations Pages: 252 - 255

9. Effect of oral cadmium administration to female rats during pregnancy on zinc, copper, and iron content in placenta, foetal liver, kidney, intestine, and brain

   • Boguslaw Sowa
   • Eugeniusz Steibert

   Original Investigations Pages: 256 - 262

10. Assessment of the teratogenicity of di(2-ethylhexyl)phthalate and mono(2-ethylhexyl)phthalate in mice

    • Kohei Shiota
    • Shin Mima

    Original Investigations Pages: 263 - 266

11. In vitro mutagenicity of valepotriates

    • W. von der Hude
    • M. Scheutwinkel-Reich
    • W. Dittmar

    Original Investigations Pages: 267 - 271

12. Effects of chlorpromazine and its dihydroxy metabolite on calcium movement and electrical activity in superior cervical ganglia

    • Melinda Guzman-Harty
    • Sarah A. Tjioe
    • John J. O'Neill

    Original Investigations Pages: 272 - 278

13. Hypothermia produced by tributyl S,S,S-phosphorotrithioate (DEF)

    • D. E. Ray
    • V. J. Cunningham

    Original Investigations Pages: 279 - 282

14. Effects on mouse embryos of in utero exposure to saccharin: teratogenic and chromosome effects

    • R. H. Dropkin
    • D. F. Salo
    • G. I. Kaye

    Original Investigations Pages: 283 - 287

15. Primary irritant contact dermatitis from synthetic pyrethroid insecticide exposure

    • Stephen A. Flannigan
    • Stephen B. Tucker
    • Ronald B. Harrist

    Original Investigations Pages: 288 - 294

16. Acknowledgements to referees

    Acknowledgments Pages: 295 - 295

17. Announcement

    Announcement Pages: 296 - 296

18. Meeting announcements

    Announcement Pages: 296 - 296