[Animal experimental study on placental passage of testosterone. Experiments in dogs]

There are still open many questions concerning the diaplacentary effect of medicaments. This above all concerns the steroid hormones and their proper and possible conversion. The problems of the placental barrier as to the permeability for sexual hormones are discussed. In an experimental study in dogs may be proved that a male sexual hormone (TTP) given to a pregnant animal passes the placenta. For this pleads the significancy of the biological androgen proof.