Coloured SEM of cumulus oophorus cells on an egg

Coloured SEM of cumulus oophorus cells on an egg

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Credit: PROFESSORS P.M. MOTTA & S. MAKABE/SCIENCE PHOTO LIBRARY

Caption: Cumulus oophorus cells. Coloured scanning electron micrograph of the cumulus oophorus cells which surround the human egg (oocyte). The cells (large round) have numerous blebs and microvilli (projections) on their surface. These projections, which in life would be very dynamic, indicate that the cells are very metabolically active. Cumulus cells entirely surround the egg (not seen) providing the correct microenvironment for fertilization. Sperm must penetrate this layer of cells to fertilize the egg. Magnification: x2,600 at 6x7cm size.

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Keywords: anatomy, bleb, cumulus oophorus, cumulus oophorus cel, egg, egg cell, female reproductive system, follicular cell, human, human body, human egg, microvilli, ovum, reproduction

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