The prospect of extracting DNA from the patient for combination with embryonic stem cells offers these patients the chance to live normal lives because the organs developed in this manner contain only the patient's own tissues. More importantly, this particular use of stem cell technology would spare the lives of the vast majority of needy organ recipients that die every year before a suitable organ can be found for them (Kinsley, 2007; Pollack, 2007).

Embryonic stem cells represent the greatest potential for medical applications, simply because they retain the greatest ability to develop into virtually any type of human tissue desired; they are capable of being extracted from fertilized human zygotes, such as the fertilized ova produced for each patient by the dozen in fertility clinics using in-vitro fertilization (IVF) techniques. The Michigan proposal centers precisely around the beneficial use of the many excess zygotes produced in IVF clinics that...
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