1. Signal transmission and covert prepattern in the metamorphosis of Hydractinia echinata (Hydrozoa)

   • Bernhard Schwoerer-Böhning
   • Michael Kroiher
   • Werner A. Müller

   OriginalPaper Pages: 245 - 251

2. Serially duplicated regenerates from the anterior half of the axolotl limb after retinoic acid treatment

   • Peter Wigmore

   OriginalPaper Pages: 252 - 256

3. Cell allocation to the inner cell mass and the trophectoderm in rat embryos during in vivo preimplantation development

   • Serge Pampfer
   • Ivo Vanderheyden
   • René De Hertogh

   OriginalPaper Pages: 257 - 263

4. Proliferation pattern and early differentiation of the optic lobes in Drosophila melanogaster

   • Alois Hofbauer
   • José A. Campos-Ortega

   OriginalPaper Pages: 264 - 274

5. Second-site modifiers of the split mutation of Notch define genes involved in neurogenesis in Drosophila melanogaster

   • Michael Brand
   • José A. Campos-Ortega

   OriginalPaper Pages: 275 - 285

6. Defective ommatidial cell assembly leads to defective morphogenesis: a phenotypic analysis of the E(spl) ^D mutation of Drosophila melanogaster

   • José A. Campos-Ortega
   • Elisabeth Knust

   OriginalPaper Pages: 286 - 294

7. Asymmetrically distributed ecdysteroid-related antigens in follicles and young embryos of Drosophila melanogaster

   • Veronika Grau
   • Herwig O. Gutzeit

   OriginalPaper Pages: 295 - 302

8. Epiboly connected with cleavage in morula and early blastula stages of Xenopus laevis, a study using time-lapse photography

   • Elze C. Boterenbrood
   • Jennifer M. Narraway

   Short Communication Pages: 303 - 307