DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Ovary. Light micrograph of a section through an ovary showing follicles (round) in various stages of maturity. Every month one follicle will reach full maturity and release its ovum (egg) at ovulation. At left is the ovarian hilum (red), where the blood vessels enter the ovary. Magnification: x5 when printed at 10 centimetres wide.
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