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Describe Graafian follicle....

Describe Graafian follicle.

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Graafian follicle is a mature fluid-filled cavity in a mammalian ovary that ruptures during ovulation to release an egg on the day of ovulation. Graafian follicle represents the follicular stage after the first meiotic division but before ovulation.
It is characterised by a large antrum that makes up most of the follicle. The secondary oocyte is surrounded by zona pellucida and a layer of corona radiata.
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