Fig. S1

Fig. S1 Cranial nerve architecture in nhsl1b mutants. Live confocal images of isl1:GFP transgene expression in lateral view in wild-type (A) and nhsl1b^fh131 mutant (B) embryos at 48 hours post-fertilization (hpf). Va and Vp, anterior and posterior nuclei, respectively, of the fifth cranial nerve (trigeminal); VII, nucleus of the seventh cranial nerve (facial), which is migrated into r6 in wild-type and is unmigrated in mutant embryos; X, nucleus of the tenth cranial nerve (vagus). Arrows indicate the projection of the facial nerve into the second pharyngeal arch, which is unaffected in nhsl1b^fh131 mutants in spite of the failure of the FBM neurons to migrate out of r4. Scale bar: 50 µm.