- P-ISSN 1225-0163
- E-ISSN 2288-8985
지문채취용 브러쉬를 이용해 사람 피부에서 지문을 채취할 경우 브러쉬로 DNA가 전이될 가능성을 연구하였다. 이때에는 지문분말을 묻힌 브러쉬와 묻히지 않은 브러쉬로 나누어 실험하였다. 살아있는 사람과 사망한 사람으로 구분하여 손가락과 손목부위를 지문채취용 브러쉬로 문지른 결과 살아있는사람에게서보다는 사망한 사람에게서 더 많은 DNA가 브러쉬로 전이되는 것을 확인할 수 있었다. 또한분말을 묻히지 않고 실험한 경우보다는 분말을 묻히고 실험한 경우에 더 많은 DNA가 브러쉬로 전이되는 것을 확인할 수 있었다. 브러쉬로 전이된 DNA와 채취 대상자의 프로파일을 비교한 결과 full 프로파일이 나타나는 경우는 관찰되지 않았고 partial 프로파일만이 나타났다. 이를 통해 피부 표면에 묻어있는DNA가 브러쉬로 전이된다는 것을 알 수 있었다.
This study investigated the possibility of DNA contamination during fingerprint collection when using a fingerprint brush. Two kinds of brushes were selected: powdered brushes and neat (not powdered) brushes. The fingerprints were collected from the tips of all the fingers and near the wrists of both living and deceased persons using the two brushes. Both brushes were analyzed for the DNA contents and profiles. The results obtained confirmed the transfer of DNA onto both brushes, although the results showed that the powdered brushes carried more DNA compared with the neat brushes. More DNA was transferred onto the brushes used on deceased persons than onto the brushes used for living persons. Only partial DNA profiles were obtained from the brushes, which is due to the presence of other sources of DNA on the surfaces of the skin of both living and deceased persons. This phenomenon confirmed the DNA contamination during fingerprint collection when fingerprint brushes were used.
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