1. Ultrastructural cytochemistry of atrial muscle cells

   • L. Yunge
   • S. Benchimol
   • M. Cantin

   OriginalPaper Pages: 1 - 11

2. Stimulation-depletion of serotonin and noradrenaline from vesicles of sympathetic nerves in the pineal gland of the rat

   • Guillermo Jaim-Etcheverry
   • Luis María Zieher

   OriginalPaper Pages: 13 - 20

3. On the origin of Z-band material and myofilaments in myoblasts from the human atrial wall

   • Thorvald Sætersdal
   • Hogne Engedal
   • Reidar Myklebust

   OriginalPaper Pages: 21 - 29

4. A correlative transmission and scanning electron microscopic study of the pigeon myocardial cell

   • Reidar Myklebust
   • Helge Dalen
   • Thorvald S. Sætersdal

   OriginalPaper Pages: 31 - 41

5. Formation and morphology of Reissner's fibre in primates

   • A. Castenholz
   • H. Zöltzer

   OriginalPaper Pages: 43 - 53

6. Immunohistochemical localization and vascular effects of vasoactive intestinal polypeptide in skeletal muscle of the cat

   • Johannes Järhult
   • Per Hellstrand
   • Frank Sundler

   OriginalPaper Pages: 55 - 64

7. Presence of adrenocorticotropin and β-Endorphin immunoreactivities in the magnocellular neurosecretory system of the rat hypothalamus

   • W. B. Watkins

   OriginalPaper Pages: 65 - 80

8. Presynaptic dense bars at neuromuscular synapses of the lobster, Homarus americanus

   • C. K. Govind
   • R. A. De Rosa
   • Joanne Pearce

   OriginalPaper Pages: 81 - 88

9. Nongranular vasopressin synthesis and transport in early stages of rehydration

   • Brigitte Krisch

   OriginalPaper Pages: 89 - 107

10. The pineal region in the opossum, Didelphis virginiana

    • John A. McNulty
    • James C. Hazlett

    OriginalPaper Pages: 109 - 121

11. Fine structure of early previtellogenic oocytes in Mugil (Liza) auratus Risso, 1810 (Teleostei, Mugilidae)

    • Solange Bruslé

    OriginalPaper Pages: 123 - 134

12. Ultrastructural changes in the urophysis of Mollienesia sphenops following adaptation to seawater

    • Richard M. Kriebel

    OriginalPaper Pages: 135 - 142

13. Ultrastructural changes at gap junctions between lesioned crayfish axons

    • George D. Bittner
    • Martis L. Ballinger

    OriginalPaper Pages: 143 - 153

14. Inhibition of parasympathetic axonal sprouting in the cat submandibular gland by sympathetic axons

    • Sheila Kemplay

    OriginalPaper Pages: 155 - 163

15. Cell junctions with funnels in the olfactory mucosa of frogs (Rana temporaria L.)

    • Wolfgang Müller

    OriginalPaper Pages: 165 - 169

16. Light and electron microscopic studies on the excretory system of Macrobiotus richtersi Murray, 1911 (Eutardigrada)

    • Barbara Węglarska

    OriginalPaper Pages: 171 - 182