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Xlr genes expression in the outer zone and labyrinth zone of term placentas. (A,B) Relative expression of Xlr3b and Xlr4b/4c in the outer zone (A) and labyrinth zone (B) of XX, XY, XmO, XpO placentas. Each bar represents mean ± standard deviation of technical triplicates of a single placenta. Significant P-values between genotypes are indicated by *P < 0.05, **P < 0.01, and ***P < 0.001.
