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PBS News Hour
Research in North Carolina is raising ethical questions
More than 12,000 residents from a former textile mill town in North Carolina are donating their blood and urine samples to a research campus. Scientists hope to use these specimens to find cures for diseases. But there are ethical concerns around what donors have given away and what, if anything, they will get back in return.Special Correspondent John Larson visited Kannapolis to find out more.
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