Figure 4.
Overexpression of Znf703 mRNA inhibits neural crest migration. Embryos were injected unilaterally at 2- or 4-cell stage with either 0.5 ng Znf703 (A–F’) or control mCherry. (A–C) Znf703 mRNA reduces the lateral and anterior expression of Sox10, Twist, and Foxd3 in stage 19 embryos (shown in anterior view). Injected side is to the right of the dotted line, and is indicated by the magenta β-gal lineage tracer. (D’–F’) Znf703 mRNA inhibits Sox10 patterning, Twist, and Tfap2a in stage 27 embryos (shown in lateral view). (D–F) Uninjected side of the same embryo. Fractions represent the portion of embryos displaying the phenotype.