The negative aspect of embryonic stem cell research (ESCR) is summed up as morality, the question of right and wrong. Embryonic stem cells are harvested from a living embryo, killing it in the process. “Tehre should be no experimentation on a human subject when death or disabling injury will result” (Saunders 1). A possible substitute for embryonic stem cells would be using adult stem cells, though they are not pluripotent like stem cells from an embryo (Dooley 2). It is argued by those who support ESCR that life begins when a zygote is formed from a sperm and egg cell, not after fourteen days when the embryo has implanted and begins to develop (Saunders 3; Wertz 1). But the other side argues that medicine in our time is highly advanced and is making outstanding strides without the need fpr embryonic stem cells (Dooley 2).
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