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Fig. 6
Fgf inhibition eliminates dlx2b:GFP reporter expression in zebrafish pharyngeal tooth germs. Tg(dlx2b:EGFP)wj1 treated from 30–72 hpf with either a DMSO control solution (A) or the Fgf inhibitor SU5402 (B). Pharyngeal tooth expression of the dlx2b:GFP reporter is eliminated with this treatment (arrows). Pectoral fin expression (arrowhead) is also absent, but no pectoral fin bud develops and this therefore may be the result of earlier Fgf requirements in fin development. (Scale bars: 100 μm.)
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