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Figure 1


Fig. 1. Expression of Fgf ligands. In situ hybridization for (A) Fgf3, (B) Fgf4,(C) Fgf8, (D) Fgf17 and (E) Fgfr1, in E9.0 embryos. Fgf3, Fgf8 and Fgf17 are expressed in a gradient in the posterior PSM. Fgf4 expression is restricted to a small cell population in the tail bud, which also expresses the other FGF ligands.