1. Comparative anatomy and ontogeny of the ductus arteriosus, a vascular outsider

   • M. Bergwerff
   • Marco C. DeRuiter
   • Adriana C. Gittenberger-de Groot

   Review Article Pages: 559 - 571

2. Morphogenesis of the primary arterial trunks of the forelimb in the rat embryos: the trunks originate from the lateral surface of the dorsal aorta independently of the intersegmental arteries

   • Y. Aizawa
   • Sumio Isogai
   • Masaharu Horiguchi

   Original Article Pages: 573 - 584

3. Differential development of cholinergic-like neurons in the superior olive: a light microscopic study

   • D. D. Simmons
   • C. Bertolotto
   • M. Wu

   Original Article Pages: 585 - 595

4. Increase of segments of elastic-type blood vessel walls in fetal placental stem villi during pre-eclampsia at term

   • Daniel Wilhelm
   • Ullrich Mansmann
   • R. Graf

   Original Article Pages: 597 - 605

5. Unusual cell ultrastructure in ventral epidermis of the African reed frog Hyperolius viridiflavus, (Anura; Hyperoliidae)

   • K. E. Linsenmair
   • Mira Rosenberg
   • M. R. Warburg

   Original Article Pages: 607 - 614

6. The extracellular matrix of rat Pacinian corpuscles: an analysis of its fine structure

   • P. Dubový
   • J. Bednárová

   Original Article Pages: 615 - 623

7. Development of the rat phrenic nerve and the terminal distribution of phrenic afferents in the cervical cord

   • Aihua Song
   • D. J. Tracey
   • K. W. S. Ashwell

   Original Article Pages: 625 - 643

8. Retinoic acid acts during peri-implantational development to alter axial and brain formation

   • C. M. Pauken
   • James B. LaBorde
   • B. Bolon

   Original Article Pages: 645 - 655