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Fig. 7
Fgf signaling activity requires Bmp. (A,B) Endodermal pouches express the Fgf signaling target etv4 at 30hpf in (A) control but not (B) Dorsomorphin-treated embryos. Lateral views, anterior to the left. (C-H) Expression of the Fgf receptors fgfr1b, fgfr3 and fgfr4 at 18hpf in control and Dorsomorphin-treated embryos. Only fgfr4 is expressed in the pharyngeal tissues and is reduced in Dorsomorphin-treated embryos (G,H, arrows). (C-F) Dorsal views, (G,H) ventral views, anterior to the left. Scale bars: 50µm.
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