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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Microscape |
Bildgröße: | 5197 px × 3461 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |