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. 2015 Aug 21;124(3):336–343. doi: 10.1289/ehp.1509703

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Effects of in utero arsenic exposure on onset of vaginal opening and body weight. (A) The x-axis represents the day of vaginal opening. The y-axis represents the percentage of animals with open vaginas. (B) The y-axis represents the average age ± SE when vaginal opening was observed. (C) Average body weight at 21 days of age (average age ± SE); (D) lines represent correlations between body weight (BW) and onset of vaginal opening (VO). *p < 0.05.