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Convictions based on hair analysis under review

July 14: The Justice Department is going through thousands of cases from the days before DNA testing to see whether the government exaggerated the significance of the FBI's hair analysis. The FBI insists the science is sound. NBC's Pete Williams reports.  (Nightly News)The Justice Department is going through thousands of cases from the days before DNA testing to see whether the government exaggerated the significance of the FBI's hair analysis. The FBI insists the science is sound. NBC's Pete Williams reports. (Nightly News)




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http://video.msnbc.msn.com/nightly-news/48186122/

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