develops from develops from epithelial cord embryonic tissue gonadal ridge sex cord Wikipedia:Sex_cords NCIT:C34183 uberon EHDAA2:0004051 Cordlike masses of epithelial tissue that invaginate from germinal epithelium of the gonad and give rise to seminiferous tubules and rete testes in the male, and primary ovarian follicles and rete ovarii in the female. UMLS:C1512242 UBERON:0005295 RETIRED_EHDAA2:0001523 SCTID:343823004 meso-epithelium