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Ovarian primordial follicles, micrograph C016 / 0536
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Ovarian primordial follicles, micrograph C016 / 0536
Ovarian primordial follicles. Light micrograph of a section through the cortex of a neonatal ovary, showing clusters of primordial follicles each containing a single oocyte (egg cell) surrounded by a layer of follicle, or granulose, cells. The oocytes are the female germline cells. At birth in humans there may be up to one million primordial follicles in a pair of ovaries. Primordial follicles remain arrested in development until activated to enter a prolonged growth and maturation phase called folliculogenesis. In postnatal and early adult life perhaps 10-20 primordial follicles are recruited each day to enter the follicular growth process resulting in the gradual decline in their number such that at menopause, only a few hundred remain. Magnification
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Media ID 9238775
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Cell Biology Cortex Cytological Cytology Developing Development Eggs Follicles Germ Cell Histological Histology Neonatal Oocyte Oocytes Ovarian Ovary Reproduction Reproductive Structure Stain Stained Stem Cell Structures System Tissue Cells Light Micrograph Light Microscope Section Sectioned
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