Xenbase Image ID: 131427

FIG. 3. Preorganizer expression of chordin requires the early b-Catenin pathway for its initiation, and Xnrs for its maintenance in the gastrula organizer. Whole-mount in situ hybridizations with chordin probe of embryos injected with cer-S (600 pg), DN-XTcf-3 (600 pg), or uninjected controls at stages 8 (A–C), 9 (D–F), 10 (G–I), and 10.5 (J–L). A patch of chordin expression is detectable at least 2 h before the external dorsal lip is seen at stage 10 (three independent experiments). All embryos are shown in dorsal view; pigmented embryos with strong dorsal–ventral polarity were used in these experiments. Image published in: Wessely O et al. (2001) Copyright © 2001. Image reproduced with permission of the Publisher, Elsevier B. V. Larger Image Printer Friendly View

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