Egg cell, SEM

Egg cell, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Egg cell. Coloured scanning electron micrograph (SEM) of a freeze-fracture of a developing egg cell in a secondary follicle of the ovary. At centre is the rounded egg cell or secondary oocyte. It is surrounded by granulosa cells that serve to nourish the egg during its developmental stages. Between granulosa cells a space develops called the follicular antrum, into which follicular fluid is secreted. This egg is still immature. The secondary follicle must develop into a graafian follicle before the egg is fully mature and ready to be released for fertilisation. Magnification: x1000 at 6x7cm size.

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Keywords: anatomy, coloured, egg, female reproductive system, follicle, follicular antrum, freeze-fracture, granulosa cells, human body, immature, oocyte, ovum, reproduction, scanning electron micrograph, secondary oocyte, section, sectioned, sem

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