Light micrograph of the encounter between sperm and ovum during in vivo fertilisation (IVF). A single sperm is seen in centre of image approaching the circular oocyte. Other competing sperm and cells comprising the corona radiata,which forms a protective halo around the central oocyte,are visible at bottom. Only one sperm will be successful in penetrating the oocyte; at the instance this occurs the oocyte membrane thickens to construct a barrier to competing sperm. In IVF,egg and sperm meet in a petri dish and subsequent events are monitored through a microscope to check for successful fertilisation | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Edelmann |
Bildgröße: | 4852 px × 3594 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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