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首页> 外文期刊>Journal of forensic sciences. >Trace DNA DNA Sampling Success from Evidence Items Commonly Encountered in Forensic Casework
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Trace DNA DNA Sampling Success from Evidence Items Commonly Encountered in Forensic Casework

机译：追踪DNA DNA取样从常见于法医案件的证据项目中取得成功

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摘要

Abstract Trace DNA analysis is a significant part of a forensic laboratory's workload. Knowing optimal sampling strategies and item success rates for particular item types can assist in evidence selection and examination processes and shorten turnaround times. In this study, forensic short tandem repeat ( STR ) casework results were reviewed to determine how often STR profiles suitable for comparison were obtained from “handler” and “wearer” areas of 764 items commonly submitted for examination. One hundred and fifty‐five (155) items obtained from volunteers were also sampled. Items were analyzed for best sampling location and strategy. For casework items, headwear and gloves provided the highest success rates. Experimentally, eyeglasses and earphones, T‐shirts, fabric gloves and watches provided the highest success rates. Eyeglasses and latex gloves provided optimal results if the entire surfaces were swabbed. In general, at least 10%, and up to 88% of all trace DNA analyses resulted in suitable STR profiles for comparison.
机译：摘要追踪DNA分析是法医实验室工作量的重要组成部分。了解特定项目类型的最佳采样策略和物品成功率可以帮助证据选择和检查流程并缩短周转时间。在这项研究中，审查了法医短串联重复（STR）案例结果，以确定适合于比较的STR谱的频率从“处理程序”和“佩戴者”区域为764项，通常提交进行检查。从志愿者获得的一百五十五（155）件物品也被取样。分析物品以获得最佳采样位置和策略。对于案例工具，头饰和手套提供了最高的成功率。实验，眼镜和耳机，T恤，织物手套和手表提供了最高的成功率。如果整个表面被擦拭，镜片和乳胶手套提供了最佳结果。通常，至少10％，高达88％的所有痕量DNA分析导致合适的STR谱进行比较。

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