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primordial sex cords
the cellular cords arising from the epithelium of the genital ridges during the indifferent state of gonadal development; they form seminiferous cords in male embryos and cortical cords in female embryos.
Farlex Partner Medical Dictionary © Farlex 2012
go·nad·al cords(gō-nad'ăl kōrdz)
Primordial sex cords formed by columns of germinal and follicle cells penetrating centripetally into the embryonic ovarian or testicular cortex.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012