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- THE WEEK, Page 22HEALTH & SCIENCEDNA Testing Gets An Unexpected O.K.
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- But a U.S. body urges great care in handling the technique
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- Defense lawyers must have been thrilled by the article on the
- front page of the New York Times. It said a report about to be
- released by the National Research Council would reject "DNA
- fingerprinting," also known as DNA typing.
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- The practice involves testing material like hair or blood
- from a crime scene and matching DNA in it to samples from a
- suspect. In theory, the chances of a mistake are fewer than 1
- in 100,000, compared with 1 in 10 for conventional blood typing.
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- But while DNA typing has been widely used since the
- mid-1980s, defense lawyers often cried foul. The test, they
- argued, is not always done carefully, and the results tend to
- make jurors overlook other evidence. Now here was a respected
- research organization urging courts to ban DNA fingerprinting
- until the scientific basis for the technique could be
- established more firmly. What could be better?
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- Except the report didn't say that. The council did propose
- that the labs handling the testing be very strictly accredited
- by an independent agency. It recommended that the odds of an
- error be calculated and presented to juries more conservatively
- than is now done. But it otherwise endorsed DNA fingerprinting
- for solving crimes and said the method should continue to be
- used in courts. That doesn't mean defense lawyers won't try to
- get old cases reopened or move to bar DNA tests from new ones.
- It does mean it will be harder for them to succeed than they
- might have thought just a few days ago.
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