1. Anteroposterior gradient during nymphal-adult moulting cycle of the tropical bont tick, Amblyomma variegatum (Acarina: Ixodidae)

   • Alfred Stauffer
   • Jean -Louis Connat

   OriginalPaper Pages: 309 - 321

2. Expression of exogenously introduced bacterial chloramphenicol acetyltransferase genes in Xenopus laevis embryos before the midblastula transition

   • Koichiro Shiokawa
   • K. Yamana
   • Keiichi Hosokawa

   OriginalPaper Pages: 322 - 329

3. Mesodermal induction in early amphibian embryos by activin A (erythroid differentiation factor)

   • Makoto Asashima
   • Hiroshi Nakano
   • Naoto Ueno

   OriginalPaper Pages: 330 - 335

4. Genetic analysis of the wing vein pattern of Drosophila

   • F. J. Diaz-Benjumea
   • A. García-Bellido

   OriginalPaper Pages: 336 - 354

5. Wound currents and wound healing in the newt, Notophthalmus viridescens

   • Lynette R. Robinson Rhodes
   • John J. Turek
   • Joseph W. Vanable Jr

   OriginalPaper Pages: 355 - 362

6. Subepithelial type II collagen deposition during embryonic chick limb development

   • Frédéric Mallein-Gerin

   OriginalPaper Pages: 363 - 369