血跡,是人類及生物留下的血液痕跡,是考古學及司法科學研究的課題。追蹤血路有助發現案發現場、兇手、兇器及遇害者的所在地,有利破案。
血跡的乾濕表示案發的時間。血跡內容帶脫氧核糖核酸有助了解涉案者的身份。
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