Xenbase Image ID: 116382

Figure 1. Two Signaling Centers Coexist in the Xenopus Blastula(A) Diagram of early events between 1-cell stage and early blastula.(B–D) Expression of Chd, Nog, and Xnr3 transcripts just after midblastula transition (7 h postfertilization). Embryos were hybridized as whole mounts, stored in methanol for 1 mo at room temperature to improve contrast, and sectioned with a razor blade.(E) RT-PCR analysis of gene markers at midblastula, early stage 9. Six samples were prepared by dissections of blastula regions as shown in the diagram.(F) Summary of gene expression at blastula. The BCNE center expresses Chd, Nog, Siamois, and Xnr3, while the Nieuwkoop center expresses Xnr2, Xnr6, and Cer. Image published in: Kuroda H et al. (2004) Copyright: © 2004 Kuroda et al. This image is reproduced with permission of the journal and the copyright holder. This is an open-access article distributed under the terms of the Creative Commons Attribution license Larger Image Printer Friendly View

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