1. Ultrastructure and hormonal content of the proximal stump of the transected hypothalamo-hypophysial tract of the frog (Rana pipiens)

   • E. M. Rodriguez
   • H. -D. Dellmann

   OriginalPaper Pages: 449 - 470

2. Selective staining of the ultra-structural components of cortical granules and Golgi cisternae of sea urchin eggs

   • Arya K. Bal

   OriginalPaper Pages: 471 - 477

3. A comparative study of the ultrastructure of the water-blood pathway in the secondary lamellae of teleost and elasmobranch fishes — benthic forms

   • G. M. Hughes
   • D. E. Wright

   OriginalPaper Pages: 478 - 493

4. Ultrastructure des photorécepteurs de Lineus ruber (O. F. Müller) (Hétéronémertes Lineïdae)

   • Guy Vernet

   OriginalPaper Pages: 494 - 506

5. Der Phragmoplast der Spermatiden von Spirostreptus spec. (Myriapoda, Diplopoda)

   • E. Horstmann

   OriginalPaper Pages: 507 - 516

6. Occurrence of the neurosecretory substance during the embryonic development of the guinea pig

   • S. Donev

   OriginalPaper Pages: 517 - 529

7. Apokrine Sekretion der peritrophischen Membran von Chironomus thummi piger Str. (Diptera)

   • Ilse Platzer-Schultz
   • Ulrich Welsch

   OriginalPaper Pages: 530 - 540

8. Monoamine fluorescence in the median eminence of foetal, neonatal and adult rats

   • G. C. Smith
   • R. W. Simpson

   OriginalPaper Pages: 541 - 556

9. Fine structure of bovine surface endometrial cells in the estrous and luteal phases

   • Yoshio Kojima
   • Ulf Selander

   OriginalPaper Pages: 557 - 571

10. Cellular localization of ³H-oestradiol in the hypothalamus

    • Arne Attramadal

    OriginalPaper Pages: 572 - 581

11. The uptake of ³H-oestradiol by the anterior hypophysis and hypothalamus of male and female rats

    • Arne Attramadal
    • Asbjörn Aakvaag

    OriginalPaper Pages: 582 - 596

12. Cellular localization of ³H-oestradiol in the hypophysis

    • Arne Attramadal

    OriginalPaper Pages: 597 - 614