Experimental study on primary transfer and secondary transfer of DNA
10.13618/j.issn.1001-5728.2017.06.015
- VernacularTitle:DNA一次和二次接触转移现象试验研究
- Author:
Song ZHANG
1
;
Zhangping JIAO
;
Lu YAN
;
Fancui KONG
;
Lin LIU
;
Xin LI
;
Hui TANG
;
Xin LIU
Author Information
1. "2011计划"司法文明协同创新中心
- Keywords:
forensic biological medicine;
exfoliated cells;
DNA;
metastasis by contact;
primary transfer;
secondary transfer
- From:
Chinese Journal of Forensic Medicine
2017;32(6):610-613
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study primary transfer and secondary transfer of exfoliated cells by handshaking and touching. Methods Firstly, volunteers wash hands , then shake hands between two volunteers, after that each volunteer touch the cleaned glass. Finally, pick up the DNA from the glass. Results STR loci that can be extracted from glasses. Under the same conditions, the number of STR loci obtained by primary transfer is more than that obtained by the secondary transfer. Conclusion Primary transfer and secondary transfer of exfoliated cells could happened by handshaking and touching. Therefore, in forensic work, we should pay great attention to the pollution problems caused by DNA transfer.
