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Figure Caption
Fig. S2 Abrogation of different signaling target genes after treatment with specific signaling inhibitors. (A–J) In situ hybridization for the Fgf, Notch, Retinoic Acid, BMP and Sonic Hedgehog target genes pea3 (A–B), neuroD (C–D), krox20 (E–F), msxC (G–H) and ptc1 (I–J) to confirm inhibitor activity at our working concentrations. Dorsal view, orientation is anterior to the left.
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