1. Retinoic acid-induced cartilage degradation is caused by cartilage cells

   • Andreas Kistler
   • Brigitta Galli
   • Herbert Kuhn

   OriginalPaper Pages: 377 - 386

2. Interactions of thePolycomb group of genes with homeotic loci ofDrosophila

   • Joanie McKeon
   • Hugh Willet Brock

   OriginalPaper Pages: 387 - 396

3. Quail neural crest cells cannot read positional values in the dorsal trunk feathers of the chicken embryo

   • Michael Keith Richardson
   • Amata Hornbruch

   OriginalPaper Pages: 397 - 401

4. Head activator does not qualitatively alter head morphology in regenerates ofHydra oligactis

   • Lorette Claire Javois
   • Victoria Kitale Tombe

   OriginalPaper Pages: 402 - 408

5. Neural-inducing activity and glycoprotein synthesis of newly mesodermalized ectoderm in the newtCynops (Amphibia)

   • Akio S. Suzuki
   • Junichi Matsuda

   OriginalPaper Pages: 409 - 412

6. Changes in the interior surface of newly mesodermalized ectoderm and its contact activity with competent ectoderm in the newtCynops (Amphibia)

   • Akio S. Suzuki
   • Junn Miyagawa
   • Takashi Kuwana

   OriginalPaper Pages: 413 - 422

7. Are accessory nuclei involved in the establishment of developmental gradients in hymenopteran oocytes?

   • Szczepan M. Biliński

   OriginalPaper Pages: 423 - 426

8. Xenopus dorsal pattern formation is lithium-sensitive

   • Steven L. Klein

   OriginalPaper Pages: 427 - 436