1. Pulses of ammonia and methylamine induce down-regulation of nematocyte and nerve cell populations in Hydrozoa (Hydra; Hydractinia)

   • Rolf G. Lange
   • Petra Holzenburg
   • Werner A. Müller

   OriginalPaper Pages: 123 - 133

2. Polar localization of plasma membrane Ca²⁺/Mg²⁺ ATPase correlates with the pattern of steady ionic currents in eggs ofLymnaea stagnalis andBithynia tentaculata (Mollusca)

   • Danica Zivkovic
   • Robbert Créton
   • M. René Dohmen

   OriginalPaper Pages: 134 - 145

3. Morphogenesis of the micropylar apparatus in ovarian follicles of the fungus gnatBradysia tritici (syn.Sciara ocellaris)

   • Friedel Wenzel
   • Herwig O. Gutzeit
   • Dieter Zissler

   OriginalPaper Pages: 146 - 155

4. Pattern of cell proliferation in embryogenesis and planula development ofHydractinia echinata predicts the postmetamorphic body pattern

   • Michael Kroiher
   • Günter Plickert
   • Werner A. Müller

   OriginalPaper Pages: 156 - 163

5. EMA, an epithelial membrane-associated antigen during early development and morphogenesis ofXenopus laevis

   • Bärbel Kiene
   • Doris Wedlich

   OriginalPaper Pages: 164 - 168

6. Immunohistochemical localization of a tenascin-like extracellular matrix protein in sea urchin embryos

   • John A. Anstrom
   • Eleanor J. Mackie
   • Richard P. Tucker

   OriginalPaper Pages: 169 - 173

7. Temporally uncontrolled expression of linearized plasmid DNA which carries bacterial chloramphenicol acetyltransferase gene withXenopus cardiacα-actin promoter after injection intoXenopus fertilized eggs

   • Koichiro Shiokawa
   • Yuchang Fu
   • K. Yamana

   OriginalPaper Pages: 174 - 180

8. Relocalization of an 82-kDa protein from lampbrush loops into the nucleoskeleton during amphibian oogenesis

   • Nicole Moreau
   • Nicole Angelier
   • Nicole Lautredou

   OriginalPaper Pages: 181 - 187