Ethics and moral philosophy in the initiation of IVF, preimplantation diagnosis and stem cells.

Details of the work leading to the introduction of human IVF, animal and human stem cells, and the preimplantation diagnosis of inherited characteristics in blastocysts are outlined briefly in this paper. The progress of these studies is related to ethical issues emerging during these years. The current status of these studies is outlined, together with a brief moral philosophy as practised by the original investigators.