1. Enteroendocrine cells in the digestive tract of Barbus conchonius (teleostei, cyprinidae)

   • J. H. W. M. Rombout

   OriginalPaper Pages: 435 - 450

2. A comparative study of physiological and structural changes at the myoneural junction in two species of frog after transection of the motor nerve

   • Vinod Verma
   • Monique Pécot-Dechavassine

   OriginalPaper Pages: 451 - 464

3. Distribution, ontogeny and ultrastructure of somatostatin immunoreactive cells in the pancreas and gut

   • J. Alumets
   • F. Sundler
   • R. Håkanson

   OriginalPaper Pages: 465 - 479

4. Ultrastructure of juvenile hormone-induced degenerating flight muscles in a bark beetle, Ips paraconfusus

   • G. C. Unnithan
   • K. K. Nair

   OriginalPaper Pages: 481 - 490

5. Neuronal and synaptic organization in the gravity receptor system of the statocyst of Octopus vulgaris

   • W. F. Colmers

   OriginalPaper Pages: 491 - 503

6. Influence of changes in composition of the cerebrospinal fluid on the secretory activity of the subcommissural organ in Rana esculenta

   • J. Hess
   • J. H. B. Diederen
   • H. G. B. Vullings

   OriginalPaper Pages: 505 - 514

7. The retina-lamina projection in the crab Leptograpsus variegatus

   • Sally Stowe

   OriginalPaper Pages: 515 - 525

8. Freeze fracture studies on the annelid septate junction

   • Ulrich Welsch
   • Wolfgang Buchheim

   OriginalPaper Pages: 527 - 534

9. “Sunbursts” and “christiesomes”: Cellular fragments in normal cow and goat milk

   • F. B. P. Wooding
   • G. Morgan
   • H. Craig

   OriginalPaper Pages: 535 - 545

10. Fine structure of the drum muscles of the piranha (serrasalminae, characidae)

    • Helga Eichelberg

    OriginalPaper Pages: 547 - 555

11. Ultrastructural appearance of neurosecretory granules in the sinus gland of the crab after different fixation procedures

    • Jean J. Nordmann

    OriginalPaper Pages: 557 - 563