Mature oocyte with a polar body. Coloured light micrograph of a human secondary oocyte (mature egg),with its first polar body. At centre is the egg (yellow) with the polar body coloured yellow and wedge-shaped (lower centre right). Before ovulation the egg cell undergoes meiotic division giving rise to two cells: a secondary oocyte and a polar body. The polar body degenerates and has no function. Here,directly around the egg is the zona pellucida single layer of cells (unfocused); outside the zona pellucida are several layers of cells making up the corona radiata (blue). Magnification: x560 at 6x7cm size. x740 at 4x5ins | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / PROFESSOR P.M. MOTTA ET AL |
Bildgröße: | 4272 px × 3216 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |