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Fig. 1. Expression of three different forkhead genes during early Xenopus development. (A) In situ hybridization of XFKH1(FoxA4b) to a stage 12 Xenopus embryo (dorsal view). Expression is in the notochord (arrow). (B) In situ hybridization of XFKH7 to a stage 12 Xenopus embryo (dorsal view). Expression is in the presomitic mesoderm, and is absent in the notochord (arrow). (C) Transverse section of a stage 15 embryo hybridized with XFKH1(FoxA4b). Expression is in the notochord and neural floor plate. (D) Expression of XFKH7 in the trunk section of the stage 14 embryo. Expression is in the presomitic mesoderm, but it is absent in the notochord and the neural floor plate. (E) Expression of the XFD-13FoxF1b) in the trunk section of stage 15 embryo. Expression is in the lateral plate mesoderm. No expression is visible in the notochord and presomitic mesoderm. Expression is also absent in the most ventral mesoderm. |
