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A system that can restore some brain cell function in pigs hours after death has further blurred the border between life and death, raising numerous ethical questions.
The research, which appears in the journal Nature, suggests that the chain of brain-cell destruction initiated by oxygen loss might not occur as rapidly, or irreversibly, as once thought.
"This is definitely one of those technologies that forces us to confront a lot of difficult questions and seems like it's going to make things a little bit difficult for doctors, for patients and for scientists, who are trying to figure out what we do and don't know about the brain and what's possible," said bioethicist Jenny Brian of Barrett, The Honors College at Arizona State University. Read more here.