[Study of DNA examination in trace sample by carrier method].
OBJECTIVE
To solve the problems of DNA testing in trace sample.


METHODS
Applying original carrier method to detect known trace blood DNA and to compare it with the results obtained by high effective DNA extracting method of Chelex-100.


RESULTS
The carrier method not only could obtain the right STR genotype in the trace blood sample, but also was twice as sensitive as the Chelex-100 method.


CONCLUSIONS
The carrier method could improve the DNA detection in trace sample. It is easy to operate and is much more valuable in the forensic case analysis.
Mao
Kun-Yun
KY
Institute of Criminal Science, Zhenjiang Public Security Bureau, Zhenjiang 212001, China. zjmky@yahoo.com.cn
Zhou
Jian-Qing
JQ
Gu
Xi-Meng
XM
Jiang
Hong-Yan
HY
Wang
Yu
Y
Chen
Jia-Jia
JJ
D004247:DNA / Q000097:blood* / Q000235:genetics; D005838:Genotype; D006801:Humans; D012117:Resins, Synthetic; D012680:Sensitivity and Specificity; D013048:Specimen Handling / Q000379:methods*; D020080:Tandem Repeat Sequences / Q000235:genetics
D012117:Resins, Synthetic; C024997:Chelex 100; D004247:DNA