LIFE SCIENCE

Detailed explanation-1: -Opponents argue that the research is unethical, because deriving the stem cells destroys the blastocyst, an unimplanted human embryo at the sixth to eighth day of development.

Detailed explanation-2: -However, human embryonic stem cell (hESC) research is ethically and politically controversial because it involves the destruction of human embryos. In the United States, the question of when human life begins has been highly controversial and closely linked to debates over abortion.

Detailed explanation-3: -The ethics behind embryonic stem cell research are controversial because the criteria of ‘personhood’ is “notoriously unclear.” Personhood is defined as the status of being a person, entitled to “moral rights and legal protections” that are higher than living things that are not classified as persons.

Detailed explanation-4: -To acquire the inner cell mass the embryo is destroyed. Risk to female donors being consented.

Detailed explanation-5: -Increase understanding of how diseases occur. Generate healthy cells to replace cells affected by disease (regenerative medicine). Test new drugs for safety and effectiveness.