1. Alterations in the cell surface proteins of Drosophila during morphogenesis

   • Daniel F. Woods
   • Wayne L. Rickoll
   • James W. Fristrom

   OriginalPaper Pages: 339 - 346

2. The occurrence of a juvenile hormone binding protein and in vitro synthesis of juvenile hormone by the serosa of Locusta migratoria embryos

   • R. Hartmann
   • C. Jendrsczok
   • M. G. Peter

   OriginalPaper Pages: 347 - 355

3. Early embryonic development of the dipteran insect Heteropeza pygmaea in the presence of cytoskeleton-affecting drugs

   • Johannes Kaiser
   • Dirk F. Went

   OriginalPaper Pages: 356 - 366

4. Membranes during yolk-platelet development in oocytes of the toad Bufo marinus

   • H. -P. Richter

   OriginalPaper Pages: 367 - 371

5. Analysis of morphogenetic movements in the development of the notum anlage of Drosophila melanogaster

   • Petter Portin

   OriginalPaper Pages: 372 - 375

6. Expression of specific genes in early mouse embryos blocked by cytochalasin

   • Reinald Fundele
   • Karl Illmensee
   • Wolfgang K. G. Krietsch

   Rapid Communications Pages: 376 - 380

7. Catecholamines induce metamorphosis in the hydrozoan Halocordyle disticha but not in Hydractinia echinata

   • Nancy Claire Edwards
   • Mary Beth Thomas
   • Sherry Jo Amyotte

   Rapid Communications Pages: 381 - 384

8. Origin of lentoids in experimental teratomas derived from early postimplantation rat embryos

   • Anton Švajger
   • Božica Levak-Švajger
   • Gordana Jurić-Lekić

   Rapid Communications Pages: 385 - 387

9. Ammonia induces metamorphosis of the oral half of buds into polyp heads in the scyphozoan Cassiopea

   • Stefan Berking
   • Teresa Schüle

   Rapid Communications Pages: 388 - 390

10. Voltage gradients and microtubules both involved in intercellular protein and mitochondria transport in the telotrophic ovariole of Dysdercus intermedius

    • Axel Münz
    • Frank Dittmann

    Rapid Communications Pages: 391 - 396

11. Decompaction and recompaction of mouse preimplantation embryos

    • Iwona Skrzecz
    • Jolanta Karasiewicz

    Rapid Communications Pages: 397 - 400

12. Regional specificity of functional sensory connections in developing spinal cord cultures varies with the incidence of spontaneous bioelectric activity

    • M. A. Corner
    • R. E. Baker
    • A. M. M. C. Habets

    Rapid Communications Pages: 401 - 404

13. Fertile heteroallelic combinations of mutant alleles of the otu locus of Drosophila melanogaster

    • Patrick Daniel Storto
    • Robert Charles King

    Erratum Pages: 405 - 405