PCO group receiving EA 30 days after EV injection. A. Survey view showing atretic follicles (1), a growing "healthy tertiary follicle (2), and interstitial cells (3), ×10 obj. B. Detailed view with an early atretic follicle in the upper part of the picture and a late atretic follicle near the bottom, ×60 obj. C. Part of the growing follicle with many mitotic figures among the granulosa cells, ×60 obj. D. Detailed view with parts of an interstitial gland and small healthy follicles, ×40 obj.