[Various histochemical aspects of chorionic villi].

Detail studies on a diastasic digested leucofuxin coloured citotrofoblastic and synciziotrophoblastic villus cells permitted to localize chorion glicoprotein concentration almost exclusively in the proximal portion of the trophoblastic syncitium. Furthermore, like in the epatic tissue, but unlike the findings in some other sites such as sarcolemma, necrilemm basal membranes, the reticula villus substance is argirofila but not P.A.S. positive. Some considerations were proposed to explain this abnormal pattern.