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Fig. 3. Effects of Xdd1 on convergent extension and blastopore closure. (A) Convergent extension measurements at mid-gastrulation. (B) Convergent extension measurements at mid-gastrulation (***P<0.001; four experiments; n=113 control, 109 dorsal, 70 circumferential). (C) Blastopore closure measurements at mid-gastrula stage (P<0.001, four experiments; n=113 control, 70 circumferential). (D) Plot of convergent extension versus blastopore closure. Each point repesents one embryo.