MICROANATOMY

Detailed explanation-1: -Embryonic stem cells are harvested in two ways: from existing human embryos and from embryos that have been created using a cloning process known as somatic cell nuclear transfer (SCNT). In both cases, the embryo is ultimately destroyed, which opponents of embryonic stem cell research argue is immoral.

Detailed explanation-2: -As Father Tad Pacholczk, moral theologian at the National Catholic Bioethics Center, points out, ‘The simple answer is that ethically there is very little we can do with the frozen embryos except to keep them frozen for the foreseeable future. No other morally acceptable options seem to exist.