Ovocyte donation since the application of the so called bioethical laws. Medical, ethical and legal implications posed by the study of a series of 300 cases at Tenon Hospital

This is the perfect example of the problems which are the consequences of t he actual medicine. We carried out an ovocyte donation study at the Tenon H ospital, in Paris, between 1994 and 1999 involving 177 cryopreserved thaw e d embryo transfers among 300 recipients. This study enables us to stress th e ethical difficulties posed by the so called bioethical laws of 1994. Simu ltaneously two consequences became clearly evident. a paucity of donors, an d the necessity to Only transfer frozen embryos due to decree of 1996 upon sanitary security that imposes the quarantine of embryos for six months. On the other hand, the use of this method has yielded important new informati on regarding embryo implantation and the importance of ovocyte quality that is closely correlated to donor age.