A) Knockdown of Smurf2 slightly reduced the neural marker expression and expanded the epidermal marker XK70, but the neural plate border genes Slug and Pax3 could be both up- and down-regulated in the morphants. B) Knockdown of Smurf1 resulted in slightly reduced Sox2 in a wider domain and decreased Pax6 expression; Slug was also predominantly reduced (10/54 and 35/54 embryos with enhanced and decreased Slug expression, respectively). Depletion of both Smurf1 and Smurf2 caused reduction and disorganization of the Sox2 domain, and decreased expression of both Pax6 and Slug (8/50 and 36/50 embryos, respectively, with enhanced and reduced Slug in 25ng combination of both MOs, and no embryos showed higher expression of Slug in double morphants with 50ng combination of the MOs).