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The expression of FSH and LH showed a significant increase in all 4-NP treated groups. No significant change was observed in the expression of PRL. *P < 0.05, **P < 0.01, ***P < 0.001. C: 0 mg/kg BW; L: 50 mg/kg BW; M: 100 mg/kg BW; H: 200 mg/kg BW.
