Ovarian follicle, light micrograph

Ovarian follicle, light micrograph

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Credit: MICROSCAPE/SCIENCE PHOTO LIBRARY

Caption: Light microscopy of a growing ovarian follicle, classified as a secondary follicle due to multiple layers of follicular (granulosa) cells surrounding the central oocyte (egg). Follicular cells multiply by mitosis and are stimulated by follicle-stimulating hormone (FSH) produced by the pituitary gland. Granulosa cells secrete estrogen. The oocyte is enclosed by a protein barrier called the zona pellucid that ensures only one sperm can merge with the oocyte during fertilization. Magnification x520 when printed at 10cm.

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Keywords: biological, biology, female, follicle cell, germ cell, granulosa cell, growing follicle, healthy, histological, histology, light micrograph, no-one, nobody, normal, oocyte, ovarian follicle, ovary, reproduction, reproductive system, secondary follicle, section, toluidine blue stain, zona pellucida

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