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Science & Technology

New guidelines are supposed to protect organ donors in a retrieval procedure that keeps blood flowing through livers, kidneys, lungs and hearts. But bioethicists have troubling questions.
Olga Pankova
/
Getty Images
New guidelines are supposed to protect organ donors in a retrieval procedure that keeps blood flowing through livers, kidneys, lungs and hearts. But bioethicists have troubling questions.
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