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Fig. 5. Spatial expression pattern of XrhoB at late neurula stages. (A–B) Stage 27. Lateral views. (B) Magnified view of the head of the embryo shown in A. (C) Xtwist staining at stage 27. (D) Horizontal and (E) vertical paraffin sections across the D and E lines of the embryo shown in (A). XrhoB is expressed in the anterior and posterior branchial, hyoid and mandibular crest segments. (F and G) Transverse paraffin sections across the F and G lines of the embryo shown in (A). The blue arrowhead in (F) shows the dorso-lateral part of the somite and the red arrowhead, the dorsal part of the neural tube. (H–J) Stage 34. (H–I) Lateral views. (I) Magnified view of the head of the embryo shown in H. (J) Dorsal view. Abbreviations: ab, anterior branchial crest segment; pb, posterior branchial crest segment; hc, hyoid crest segment; mc, mandibular crest segment; df, dorsal fin; le, lens; mhb, midbrain hindrain boundary; mnc, migrating neural crest cells; no, notochord; ov, otic vesicle nt, neural tube; so, somites; upm, unsegmented presomitic mesoderm. |
