^BEgg cell.^b Coloured Scanning Electron Micrograph (SEM) of a developing egg cell in a secondary follicle of the ovary. At centre is the rounded egg cell or secondary ^Ioocyte^i (pink). It is surrounded by granulosa cells (violet) which serve to nourish the egg during its developmental stages. Between granulosa cells (at right, yellow) 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 fertili- sation. Magnification: x710 at 6x7cm size. Magnification: x915 at 4x5 inch size.

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TOP10395356

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達志影像

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RM

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