a mature follicle in the ovary prior to ovulation, containing a large fluid-filled cavity that distends the surface of the ovary. The *oocyte develops inside the follicle, attached to one side. [R. de Graaf (1641–73), Dutch physician and anatomist]
Follicle is the term applied to a very small sac or gland: for example, small collections of adenoid tissue in the throat, and the small digestive glands on the mucous membrane of the intestine.... follicle
A hormone produced by the anterior PITUITARY GLAND which stimulates the formation of follicles in the ovary each menstrual cycle (see OVARIES; MENSTRUATION) and of spermatocytes in the testis (see TESTICLE). It is under hypothalamic control (see HYPOTHALAMUS) and in the female there is feedback inhibition by oestrogens from the developing follicle.... follicle-stimulating hormone
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