abnormal secondary ovarian follicle number decreased secondary ovarian follicle number csmith MP:0011129 reduced secondary ovarian follicle number fewer than normal numbers of the ovarian follicle in which the primary oocyte attains its full size and is surrounded by an extracellular glycoprotein layer (zona pellucida) that separates it from a peripheral layer of follicular cells permeated by one or more fluid-filled antra; the primary oocyte occupies the cumulus oophorus while the theca of the follicle develops into internal and external layers decreased Graafian follicle number MPheno.ontology 2011-05-20T11:39:46Z reduced vesicular ovarian follicle number reduced folliculus ovaricus vesiculosus number decreased vesicular ovarian follicle number reduced Graafian follicle number decreased vesicular follicle number reduced antral follicle number decreased folliculus ovaricus vesiculosus number decreased antral follicle number reduced vesicular follicle number