Theca Cells

**Definition:** The flattened stroma cells 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.

**Tree numbers:** - A05.360.319.114.630.535.400 - A06.300.312.497.535.600 - A11.329.850

**Synonyms:** - Ovarian Interstitial Cells