Word: str
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Dates: during 2000-2009
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...some time about using newly developed DNA-testing technology on evidence they had collected: samples of semen from three of the victims from 1982 and '83 (Mills, Chapman and Christensen) and the sample of saliva Ridgway gave in 1987. The new technology, called short-tandem-repeat testing, or STR, which has been available only since 1997, has revolutionized DNA analysis because of its unprecedented accuracy. STR measures 13 tiny repeating sections in a DNA sample, which effectively represent a unique bar code on any individual's genome. It is now widely used by police agencies...