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Gli2 is required for the expression of Bmp4 and Fgf8 in the ventral diencephalon. (A-L) RNA in situ hybridization of Shh, Bmp4 and Fgf8 in E9.5 embryos (A,B,E,F,I,J) and embryo sections (C,D,G,H,K,L). Red arrows indicate diencephalic expression. Scale bars: 100 μm.
