Coloured SEM of sperm on fertilized egg

Coloured SEM of sperm on fertilized egg

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Caption: Fertilised egg. Coloured scanning electron micrograph (SEM) of sperm clustered on the surface of a fertilised human egg (ovum). The round egg (green) is at the zygote stage. Although the egg is already fertilised sperm are still attached to it (yellow hair-like structures). Each sperm has a head and a long tail. Coloured blue are the cumulus oophorus cells. These metabolically active cells provide the correct microenvironment for fertilisation. Magnification: x650 when printed 10 centimetres wide.

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Keywords: after fertilisation, anatomy, cumulus oophorus, egg, egg and sperm, fertilisatio, fertilisation, fertilization, human, human body, images, in fertilisation, in human fertilisation, magnified image, microscopic photos, oocyte, ova, reproduction, sperm, subjects, zygote

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