human_reference_atlas part of cell cell type (from CL) stromal cell theca cell A flattened stroma cell forming a sheath or theca outside the basal lamina lining the mature ovarian follicle. Thecal interstitial or stromal cells are steroidogenic, and produce primarily androgens which serve as precusors of estrogens in the granulosa cells. BTO:0002850 CT theca cell CL:0000503 theca cell FMA:18690 androgen secreting cell Homo sapiens theca cell layer theca externa theca interna ovary ovarian follicle corpus luteum mature ovarian follicle atretic follicle of ovary ovarian cortex postovulatory follicle 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 corpus luteum granulosa theca layer 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 pre-selection antral follicle selection antral follicle