Xenbase Image ID: 131706

Fig. 3. Comparison of the spatial distribution of Brat and Xbra transcripts during gastrulation by whole-mount in situ hybridization. Brat expression is shown in the upper panel, Xbra expression is shown in the lower panel. (A,D) Zygotic expression of Brat and Xbra is first detected just prior to the appearance of the dorsal blastopore lip (arrow), stage 10-. (B,E) By stage 10+ both Brat and Xbra are expressed throughout the marginal zone. (C,F) During late gastrulation, stage 12, Brat is expressed in the ventrolateral mesoderm surrounding the yolk plug, but not in the axial mesoderm of the future notochord (arrow). Xbra is also expressed in the ventrolateral mesoderm, but, in contrast to Brat, it is expressed in the notochord (arrow). Image published in: Horb ME and Thomsen GH (1997) Copyright © 1997. Image reproduced with permission of the publisher 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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