DNA
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Special: DNA unraveled
DNA as a forensic instrument By MARK FISCHETTI IN A NORTH CAROLINA courtroom in June, a man was acquitted of murder after spending 11 years in prison. Another inmate had boasted of committing the crime, and DNA tests showed the braggart had, indeed, been at the scene. DNA test results, first allowed as evidence in 1990, are changing the criminal justice system, but not always for the better.
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