1. Distribution of cytoplasmic determinants in unfertilized eggs of the ascidian Halocynthia roretzi

   • A. Yamada
   • Hiroki Nishida

   ORIGINAL ARTICLE Pages: 297 - 304

2. Expression of ecdysteroid-regulated transcripts in the silk gland of the wax moth, Galleria mellonella

   • M. Jindra
   • L. M. Riddiford

   ORIGINAL ARTICLE Pages: 305 - 314

3. The spalt-related gene of Drosophila melanogaster is a member of an ancient gene family, defined by the adjacent, region-specific homeotic gene spalt

   • R. Barrio
   • Martin J. Shea
   • F. C. Kafatos

   ORIGINAL ARTICLE Pages: 315 - 325

4. The role of ecdysone in the induction and maintenance of hsp27 transcripts during larval and prepupal development of Drosophila

   • François Huet
   • J.-L. Da Lage
   • G. Richards

   ORIGINAL ARTICLE Pages: 326 - 332

5. Regulated expression of the retinoblastoma gene product by fibroblast growth factor but not by activin during mesoderm induction in Xenopus

   • J. Greenland
   • L L. Gillespie

   SHORT COMMUNICATION Pages: 333 - 336

6. The hydrozoan life cycle: a small secreted protein is involved in specification of the polyp stage

   • Birgit L. Aerne
   • B. L. Aerne

   SHORT COMMUNICATION Pages: 337 - 343

7. Homeotic duplication of the pelvic body segment in regenerating tadpole tails induced by retinoic acid

   • G. B. Müller
   • Johannes Streicher
   • Romana J. Müller

   SHORT COMMUNICATION Pages: 344 - 348

8. 2D gene expression parameters of wing imaginal disc of Drosophila for developmental analysis

   • J. F. Santarén
   • Antonio García-Bellido

   TECHNICAL NOTE Pages: 349 - 354