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Fig. 7. LvGsc expression oralizes embryos downstream from p38. (A-C) Whole-mount in situ analysis of Nodal (A), Dri (B) and Tbx2/3 (C) expression in control (1), SB-treated (2), Gsc-injected (3), and Gsc-injected plus SB-treated (4) embryos. Vegetal views at prism stage are shown, except for A (lateral views at late gastrula). (D) Control (D1), SB-treated (D2), and Gsc-injected (D3) embryos stained with 1c10 at the pluteus stage. In D4, embryos were injected with Gsc in one blastomere at the 2-cell stage and then SB-treated and stained as in D1-D3. Full confocal projections are shown.