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Fig. 5
Application of 10-5M diethylaminobenzaldehyde (DEAB) to zebrafish embryos before the 10-somite stage; myoD, tbx5 double-stainings at the10s stage; dorsal views, anterior is to the left. A: DEAB is applied from successively later stages onward; early fin precursors are absent if treatments include gastrula stages but are present if treatments start after gastrulation. B: Two-hour inhibitor treatments: Fin precursors are absent if treatments are conducted during gastrulation but are present if treatment are conducted during early somitogenesis. C: Schematics of inhibitor treatments and results. Red boxes indicate the time window of fin precursor specification.