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Figure 3


Fig. 3. PMC ingression is blocked by SnaMASO injection. (A-C) Control embryos show normal PMC ingression (arrow), and normal gastrulation. (D-G) Embryos of the same age as A-C injected with SnaMASO. Compared with the control, SnaMASO-injected embryos (Sna morphants) show no PMC ingression (D), even at gastrula stages (E-G). (G) Invagination is also delayed, though occurs normally later. MB, mesenchyme blastula; EG, early gastrula; LG, late gastrula.