[Science and law in assisted reproductive medicine -- two sides of the same token].

The topic of assisted reproductive medicine (ART) illustrates the two-sidedness of all medical advances. It encompasses not only a responsibility for research, but also a responsibility to research. Current discussion revolves around the central question whether an all too strict interpretation of the German 'Embryonenschutzgesetz' (law to protect the embryo) with the resulting medical guidelines hinders the establishment of an ART practice corresponding to international standards. Current discussion, particularly in view of a new ART legislature in process, leaves the following topics open to debate: heterologous oocyte and sperm donations and a possible 'split' parenthood, the marital status of prospective couples and the serious clinical problem of multiple-gestation pregnancies. The technically feasible frequently surpasses what can or should ethically and legally be made possible.