[The reaction of chorion epitheliums of human placentae to beta-sympathocomimetics (author's transl)].

The enzyme histochemical response of chorionic epithelium after treatment with Dilatel has been examined on 50 placentae of classified eutrophic premature and full-term births. In relation to the degree of damage to trophoblasts at the start of treatment and to dosage the response is mobilisation and further differentiation of Langhans cells and their transformation into mature plasmodium. The relevance of these results for metabolic transport and hormonal synthesis in the feto- maternal metabolic barrier and for the chance of therapeutic effects on insufficiency of the placenta is discussed.