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Fig. 4. Expression of XFD-13FoxF1b) during Xenopus development. (A) Transverse section through the head of a stage 35 embryo hybridized with an XFD-13FoxF1b) probe. Expression is in the neural crest cells. The plane of section is indicated in the Fig. 4C (number 1). (B) Transverse section through the trunk of a stage 35 embryo hybridized with an XFD- 13FoxF1b) probe. Expression is in the lateral and ventral regions of the embryo. The plain of section is indicated in the Fig. 4C (number 2). (C) Whole mount in situ hybridization of a stage 35 embryo with the XFD- 13FoxF1b) probe. Numbers indicate the plane of section in Figs. 4 A,B. (D) Whole mount in situ hybridization of a stage 40 embryo with XFD- 13FoxF1b) and troponin probes. Light pink staining indicates XFD- 13FoxF1b) expression, whereas the blue staining indicates troponin expression in the heart. An arrow indicates this area of expression. There is no XFD-13FoxF1b) expression in the heart. |