Usefulness of a toothbrush as a source of evidential DNA for typing |
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| Authors: | Tanaka M Yoshimoto T Nozawa H Ohtaki H Kato Y Sato K Yamamoto T Tamaki K Katsumata Y |
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| Affiliation: | Department of Legal Medicine and Bioethics, Postgraduate School of Medicine, Nagoya University, Japan. |
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| Abstract: | We investigated the usefulness of a toothbrush as a source of DNA for an unidentified cadaver. Ten toothbrushes were obtained from ten individuals along with their peripheral blood. We recovered from 10 to 430 ng of DNA from all but one of the toothbrushes. All ten toothbrushes, including the one containing no detectable DNA by fluorometry, were typed correctly at all of the loci tested, including nine STRs. Three toothbrushes obtained in two actual deaths also identified two victims and one suspect. Therefore, toothbrushes seem to be useful as a source of evidential DNA for personal identification. |
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