[The combined effects of testosterone propionate and a temporary lowering of temperature on the fate of Müllerian ducts of the female bird embryo. Morphological, histological, and cytobiochemical studies].

The action of testosterone propionate combined with a temporary lowering of temperature after the sexual differentiation of chick and quail female embryos--inhibits the cephalo-caudal regression of the right müllerian duct--prevents the development of the left one. In some cases, these two ducts are thread and often have the same length: in other cases, the involution of the müllerian tractus may be total.