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Placental and embryonic growth dynamics. Placental and embryonic weights were determined throughout gestation as a function of WT, Xm-X, and KO genotypes. WT and KO data include both male and female embryos. A. Placental weights (mean ± SD), with the number assessed (n) indicated in parentheses. B. Embryonic weights (mean ± SD); *, P = 0.041 (difference between Het and WT at E16.5).
