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Fig. S4
Ectodermal cells are protrusive and polarized. (A) Position of cell transplantation just beneath the EVL, at the animal pole of the embryo. (B–E) Ectodermal cells expressing Lifeact-GFP emit large cytoplasmic extensions (arrowhead in B) oriented toward the YSL (C), of the same length (D) and at the same frequency (E) as endodermal cells. nendo = 72 extensions, necto = 71 extensions, Pangle endo/ecto = 0.97. (Scale bar: 10 µm.) ns, nonsignificant (P > 0.05).
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