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Sestd1 mutant embryonic phenotype. A and B, early Sestd1 mutant embryos have a more rounded posterior contour than WT littermate embryos. C and D, length-width ratio (LWR) measurements in wild type and Sestd1 mutants for whole (C) and posterior (D) embryo. n.s., not significant (p > 0.05); **, p < 0.01.
