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FGF signal blockade does not affect cell fate allocation at the rhombic lip. (A,B) Electroporation of dn-fgfr3c +gfp (arrow) at E3 (A) and E4 (B) does not affect either Lhx9 expression at E6 (A) or cell labelling at E7 (B). (C-E) Atoh1 (C), Tbr1 (D) and Lhx9 (E) are normal in P4 Math1-CTKO mice, seen in medial (C,D) and lateral (E) sagittal section. Scale bars: 200 μm. dn, dentate nucleus; egl, external granule layer; fn, fastigial nucleus; rl, rhombic lip; vn, ventral nuclei.
