Distinct functions of the Drosophila genes Serrate and Delta revealed by ectopic expression during wing development Franziska JönssonE. Knust ORIGINAL ARTICLE Pages: 91 - 101
Polar effects of lithium in the heart of the zebrafish Danio rerio R. A. McCarthyM. SunDenice Smith ORIGINAL ARTICLE Pages: 102 - 109
The role of Ca2+ in progesterone-induced germinal vesicle breakdown of Xenopus laevis oocytes: the synergic effects of microtubule depolymerization and Ca2+ N. S. DuesberyY. Masui ORIGINAL ARTICLE Pages: 110 - 124
Variation of cleavage pattern permitting normal development in a sand dollar, Peronella japonica: comparison with other sand dollars S. AmemiyaE. Arakawa ORIGINAL ARTICLE Pages: 125 - 135
The early stages of ommatidial development in the flour beetle Tribolium castaneum (Coleoptera; Tenebrionidae) M. FriedrichIrene RamboldRoland R. Melzer ORIGINAL ARTICLE Pages: 136 - 146
Restricting oxygen supply to the prospective dorsal side does not reverse axis polarity in embryos of Xenopus laevis S. D. BlackSusan N. HawkKay Larkin ORIGINAL ARTICLE Pages: 147 - 152
Transcription of a zebrafish gene of the hairy-Enhancer of split family delineates the midbrain anlage in the neural plate Marcus MüllerElisabeth von WeizsäckerJosé A. Campos-Ortega ORIGINAL ARTICLE Pages: 153 - 160