1. Zebrafish hybrids suggest genetic mechanisms for pigment pattern diversification in Danio

   • David M. Parichy
   • Stephen L. Johnson

   Original Article Pages: 319 - 328

2. Dorsal and Snail homologs in leech development

   • Bob Goldstein
   • Michael W. Leviten
   • David A. Weisblat

   Original Article Pages: 329 - 337

3. Five Nkx5 genes show differential expression patterns in anlagen of sensory organs in medaka: insight into the evolution of the gene family

   • Maja Adamska
   • Angela Wolff
   • Eva Bober

   Original Article Pages: 338 - 349

4. Evolutionary analysis of vertebrate Notch genes

   • Daniel R. Kortschak
   • Richard Tamme
   • Michael Lardelli

   Short Communication Pages: 350 - 354

5. A gene trap insertion reveals that amyloid precursor protein expression is a very early event in murine embryogenesis

   • M.-O. Ott
   • S. Bullock

   Expression Note Pages: 355 - 357

6. Expression of Xenopus L -arginine:glycine amidinotransferase (XAT) during early embryonic development

   • Hui Zhao
   • Ying Cao
   • Horst Grunz

   Expression Note Pages: 358 - 360

7. Laser-mediated microdissection of paraffin sections from Xenopus embryos allows detection of tissue-specific expressed mRNAs

   • Yukiko Imamichi
   • Georgia Lahr
   • Doris Wedlich

   Technical Note Pages: 361 - 366