human_reference_atlas cell cell type (from CL) primary oocyte A primary oocyte is an oocyte that has not completed female meosis I. primary oocyte primary oogonium primary oocyte BTO:0000512 CL:0000654 FMA:18645 CT Homo sapiens primary ovarian follicle secondary ovarian follicle ovary ovarian follicle primordial ovarian follicle mature ovarian follicle atretic follicle of ovary ovarian cortex antral follicle central inferior antimesenteric ovary central inferior mesenteric ovary central inferior ovary central ovary central superior antimesenteric ovary central superior mesenteric ovary central superior ovary cumulus oophorus oocyte complex dominance antral follicle early antral follicle hemorrhagic anovulatory follicle lateral inferior antimesenteric ovary lateral inferior mesenteric ovary lateral inferior ovary lateral ovary lateral superior antimesenteric ovary lateral superior mesenteric ovary lateral superior ovary luteinized unruptured follicle medial inferior antimesenteric ovary medial inferior mesenteric ovary medial inferior ovary medial ovary medial superior antimesenteric ovary medial superior mesenteric ovary medial superior ovary multilayer ovarian follicle pre-selection antral follicle preantral follicle selection antral follicle transitional primary ovarian follicle transitional primordial ovarian follicle