释义 |
graaf·ian follicle \ˈgrä]fēən-, ˈgra]\ noun Usage: sometimes capitalized G Etymology: Regnier de Graaf died 1673 Dutch anatomist + English -ian : a vesicle in the ovary of a mammal enclosing a developing egg and consisting in the typical form of an outer fibrous sheath and an inner cellular and vascular sheath derived from the ovarian stroma and separated by a hyaline basement membrane from an epithelial zone derived from the germinal epithelium and made up of several layers of small usually polyhedral cells that are heaped at one point into a mound which projects into the fluid-filled cavity of the vesicle and encloses the growing egg |