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Fig. S1 Dorsomorphin acts quickly to block Bmp signaling. Embryos were treated with either 1% DMSO (controls) or 100 µM DM beginning at 5 hpf. (A) Phospho-Smad staining in a control after 1 hour, or in DM-treated embryos after 15 minutes or 1 hour. (B) Expression of sizzled in a control embryo after 1 hour, or in DM-treated embryos after 30 minutes or 1 hour. All images show animal pole views with dorsal to the right.
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