An ovarian follicle is a small sac (cyst) on the ovary. An egg matures inside of the follicle; when the egg is mature, the follicle bursts open and releases the egg.
| By | Healthwise Staff |
| Primary Medical Reviewer | Sarah Marshall, MD - Family Medicine |
| Specialist Medical Reviewer | Kirtly Jones, MD - Obstetrics and Gynecology |
| Last Revised | October 12, 2010 |
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