Embryo research--why the Cardinal is wrong.
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Reasons are given for suggesting that individuation of the human embryo does not begin until the primitive streak forms at about the fourteenth day after conception; this view, though contested by many, is held by very many committed Christians of all denominations. In the conceptus or pre-embryo, after the formation of a blastocyst at about four-five days after fertilisation, biopsy of a single cell from the outer layer of cells (which later can form the membranes and placenta) can be used to determine the sex of the conceptus and will ultimately be used to detect the presence of an abnormal gene such as that for Duchenne-type muscular dystrophy, without detriment to development of the basal cell mass from which the embryo forms. The potential benefits in the prevention of inherited disease are profound. (+info)
Infanticide: a reply to Giubilini and Minerva.
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The concept of brain birth has assumed a position of some significance in discussions on the status of the human embryo and on the point in embryonic development prior to which experimental procedures may be undertaken on human embryos. This paper reviews previous discussions of this concept, which have placed brain birth at various points between 12 days' and 20 weeks' gestation and which have emphasised the symmetry of brain birth and brain death. Major developmental features of brain development are outlined, including the gradualness with which new features generally appear, and also the electroencephalogram (EEG) characteristics of premature infants. From this it is concluded that, if the concept of brain birth is a valid one, it should be placed at 24-28 weeks' gestation. More importantly, it is concluded that the differences between brain development and brain death throw doubt on the concept itself. (+info)
It is often argued that the continuity of the processes of embryo development precludes the establishment of morally significant boundaries, once development is under way. These arguments typically claim that marking out any moral boundaries requires identifying particular significant events, and that in such circumstances this is either impossible or arbitrary. In this paper it is argued that arguments of this kind are not cogent. The paper concludes by indicating where the real problems lie. (+info)
The status of anencephalic babies: should their bodies be used as donor banks?
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In recent months there has been considerable discussion on the ethics of using organs from anencephalic babies for transplantation purposes. The heart of an anencephalic in Ireland was so used, but the recipient died very soon after the operation. Since this case came to light the Royal College of Physicians has imposed a ban on the use of these babies as donors while a working party investigates the issues involved.* This article attempts to examine the problem and reaches the conclusion that in practice it is not ethical to use the organs of anencephalics for transplants. (+info)