LABORATORY METHOD Antiserum to human chorionic gonadotrophin was prepared by giving rabbits an intravenous injection of 15,000 i.u. human chorionic gonadotrophin (Pregnyl, Organon) in 2 ml. of a 1% bentonite suspension in normal saline (Butt, Crooke, and Cunningham, 1961) at weekly intervals for five weeks. The rabbits were bled one week after the final injection of human chorionic gonadotrophi...

INTRODUCTION Choriocarcinoma is a highly malignant tumor of trophoblastic origin. Most cases present within one year of the antecedent pregnancy (molar or non-molar). However, very rarely, choriocarcinoma can develop from germ cells or from dedifferentiation of endometrial carcinoma into choriocarcinoma. This article concerns a case of choriocarcinoma developing 38 years after the patient's las...

Normal chorionic villous vascularization is essential for the undisturbed development of pregnancy. Defective vasculogenesis may play a role in pathological pregnancy. To assess pathological chorionic villous vascularization, normal vascularization has to be defined first. Few data are available on this topic. The aim of this study was therefore to investigate normal chorionic villous vasculari...