olig2 and sdf1a expression in wild-type, mafba-/- and olig2 MO-injected embryos. All images show dorsal views with anterior to the left. A,B:olig2 expression in wild-type (A) and mafba-/- (B) embryos at 24 hpf. Arrow in B indicates loss of r5/r6 olig2 expression in mafba-/- in mutant embryos. Otic vesicles are outlined in red. C,D:sdf1a (blue) and egr2b (red) expression in wild-type (C) and mafba-/- (D) embryos at 18 hpf. Absence of r5 egr2b expression identifies mafba mutants. E,F:sdf1a expression in wild-type (E) and mafba-/- (F) embryos at 24 hpf. Mutant embryos lack r6 expression (arrow). G–J:sdf1a expression in control (G,I) and olig2 (H,J) MO-injected embryos (H, J).
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