CYP19A1 and polycystic ovary syndrome: Compared with the PCOS group, the rats from the PCOS EA group had significantly increased P450arom expression in their ovarian tissues (p<0.05) (Fig. 6B, 6C, 6D), with no significant difference compared with the control group (p>0.05) (Fig. 6A, 6C, 6D).