Coloured Sem Of Sperm On Egg During Fertilisation
by Professor P.m. Motta Et Al/science Photo Library
Title
Coloured Sem Of Sperm On Egg During Fertilisation
Artist
Professor P.m. Motta Et Al/science Photo Library
Medium
Photograph - Photograph
Description
Fertilisation. Coloured Scanning Electron Micro- graph (SEM) of sperm penetrating a human egg (ovum) during fertilisation. Sperm are coloured blue, each with a rounded head and a long tail. They are seen penetrating the thick spongy surface of the zona pellucida (pink) which surrounds the egg. The zona pellucida attracts sperm to the egg and enables the sperm to attach. The human female usually produces a single large egg, and only one male sperm can penetrate the egg's wall to fuse with the egg nucleus. When this happens, the egg membrane forms a barrier to any other sperm. Magnification: x5,100 at 6x7cm size. x7,000 at 4x5ins
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February 25th, 2021
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