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E2 (a) and P (b) concentrations and the ratio of P/E2 (c) in plasma following 90-day oral exposure to CdCl2 or 17β-estradiol (positive control), at the 90-day and 180-day postexposure periods. p ≤ 0.05 (a—vs. pure control group, b—vs. oil control, and c—vs. positive control).
