CYP19A1 and polycystic ovary syndrome: Rats in the PCOS group had poorly developed primary follicles and cystic dilating follicles, as well as significantly reduced granular cell layers, whereas rats in the PCOS EA group had some matured antral follicles, hyperplasia, increased mitochondria in granular cells, and increased expression of P450arom and its mRNA, as well as increased estrone and estradiol levels.