Xenbase Image ID: 81954

Fig. 7. The expression of late genes depends on correct initiation of the tail bud at stage 13. (A) Schematic diagram of exogastrula to show the position of the tail bud forming region and location of N, M and C on the dorsal side of the waist region. The waist region links the mesoendoderm (ME) and the neuroectoderm (NE) posterior to posterior and the dorsal side corresponds to the chordoneural hinge. (B) whole mount in situ hybridisations to exogastrulae at stage 32. Dorsal views with mesoendoderm uppermost, red boxes mark the hinge region, other blue spotting in the neuroectodermal sac is due to trapping of the probe. (B) Exogastrula showing expression of Xnot2 in the unfolded chordoneural hinge. (C) Expression of Xcad3 in the hinge region. (D) Lack of expression of Xwnt3a in the hinge region. (E) Lack of expression of Xhox3 in the hinge region as previously reported (Ruiz-i-Altaba, 1990). Image published in: Beck CW and Slack JM (1998) Copyright © 1998. Image reproduced with permission of the Publisher, Elsevier B. V. Larger Image Printer Friendly View

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