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 (blue) with the polar body coloured dark blue and wedge-shaped (upper centre). 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 (pink). Magnification: x560 at 6x7cm size. x740 at 4x5ins | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / PROFESSOR P.M. MOTTA ET AL |
Taille de l’image : | 4713 px × 3788 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |