Maturing follicle. Light micrograph of a sectioned ovary showing a secondary follicle (large purple and white body,upper centre) maturing into an egg. 10-15 primordial follicles (small purple circles,lower frame) mature with each menstrual cycle. In the secondary follicle stage the chromosome-containing oocyte (purple circle,inside follicle) enlarges and is surrounded by many granulosa cells (dark purple dots). A large fluid-filled space (the antrum,white marbled with blue) also develops. One secondary follicle per month becomes a Graafian follicle,releasing its egg at ovulation. Trichrome stain. Magnification: x46 at 6x7cm size x23 at 35mm size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Innerspace Imaging |
Bildgröße: | 3105 px × 4510 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |