Ovarian follicles, light micrograph

Bildnummer 13505067
Ovarian follicles, light micrograph
Light micrograph of a section through an ovary showing several primary follicles (round). In each follicle is a developing oocyte (bright) surrounded by ovarian follicular epithelial cells (pink). The bigger the follicle, the more mature the oocyte. At birth there are tens of thousands of primordial follicles, the precursors to primary follicles, present in the ovaries. Once sexual maturity is reached, up to 20 primordial follicles are triggered to start developing into primary follicles every menstrual cycle. Only one will reach full maturity and release its egg (ovum) at ovulation. Magnification: x200 when printed at 15cm wide.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / EYE OF SCIENCE
Bildgröße: 6016 px × 4016 px
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