Forensic DNA testing can play a critical role in homicide investigations. Selecting the appropriate evidence on which to perform DNA testing requires foresight and reasoning based on experience and science. Although successful DNA testing can occur using many substrates, including blood, hair, and sweat/epithelial cells, positive results can also result from testing various unorthodox samples. The authors report on a triple-murder investigation where DNA testing of dog feces at the crime scene matched DNA testing of feces found on the shoe of a suspect resulting in successful prosecution of the case.
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机译：法医 DNA 检测可以在凶杀案调查中发挥关键作用。选择适当的证据进行 DNA 测试需要基于经验和科学的远见和推理。尽管可以使用许多底物（包括血液、头发和汗液/上皮细胞）进行成功的 DNA 检测，但检测各种非正统样本也可以获得阳性结果。作者报告了一项三重谋杀案调查，其中对犯罪现场狗粪的 DNA 检测与在嫌疑人鞋子上发现的粪便的 DNA 检测相匹配，从而成功起诉了该案。
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