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血迹

都灵裹尸布，由血迹印出

血迹，是人类及生物留下的血液痕迹，是考古学及司法科学研究的课题。追踪血路有助发现案发现场、凶手、凶器及遇害者的所在地，有利破案。

血迹的干湿表示案发的时间。血迹内容带脱氧核糖核酸有助了解涉案者的身份。

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血迹
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