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G.B. Divall 《Forensic science international》1984,24(4):239-246
A characteristic peptidase has been identified in vaginal swab extracts. This enzyme, which has been termed vaginal peptidase, can be identified by its high anodal electrophoretic mobility in starch gel at pH 7.4 and its ability to hydrolyse the dipeptide substrate L-valyl-L-leucine. Vaginal peptidase was not detected in any of the body fluids or excretions commonly encountered in forensic stain analysis, other than vaginal debris. The use of this enzyme as a biochemical marker for the identification of vaginal debris in dried stains is discussed. 相似文献
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《Science & justice》2023,63(4):477-484
The Body Fluid Forum of the Association of Forensic Science Providers recognised concerns raised by forensic practitioners regarding the lack of data to inform on the incidence of significant AP (Acid Phosphatase) reactions from vaginal and oral samples, i.e. those which might be misinterpreted as indicating the presence of semen. This is particularly relevant in the light of appeal court rulings regarding the need for data to support evaluations. This paper presents collaborative data on the nature and incidence of AP reactions from vaginal and oral swabs provided by donors. The results demonstrate that caution is required with mid to strong purple AP reactions from direct testing of oral swabs and with mid purple reactions from vaginal swabs. The use of a Bayesian approach to assist with the provision of opinions regarding the presence of seminal fluid is highlighted. 相似文献