Grubwieser Petra, Thaler Alexandra, Köchl Silvano, Teissl Roger, Rabl Walter, Parson Walther
Institute of Legal Medicine, Muellerstrasse 44, 6020 Innsbruck, Austria.
J Forensic Sci. 2003 Jul;48(4):733-41.
This paper describes a systematic study of the influence of optical, physical, and chemical methods used for fingerprint enhancement on subsequent DNA analysis of biological stains. Latent fingerprints as well as fingerprints in contact with blood and saliva on different surfaces were treated with dactyloscopic methods. As a general finding, subsequent STR profiling of the blood/saliva traces led to good results after all the enhancement methods included in this study. Concerning blood enhancement procedures, the airbrush technique showed deleterious effects on subsequent STR analysis in some cases. We therefore recommend the implementation of the layer technique, as it brings advantages for fingerprint enhancement as well. It could also be shown that, as can be necessary in practical casework, two enhancement methods can be performed on a single stain without having influence on STR profiling. In terms of methodological variety, this paper reflects a comprehensive study performed on STR profiling after fingerprint enhancement methods, including rare methods and variations of techniques, which can be a useful alternative in certain case scenarios.
本文描述了一项关于用于指纹增强的光学、物理和化学方法对后续生物污渍DNA分析影响的系统研究。对不同表面上的潜在指纹以及与血液和唾液接触的指纹采用指纹鉴定方法进行处理。总的研究结果是，在本研究涵盖的所有增强方法之后，对血液/唾液痕迹进行后续的STR分型均取得了良好结果。关于血液增强程序，喷枪技术在某些情况下对后续的STR分析显示出有害影响。因此，我们建议采用分层技术，因为它对指纹增强也有优势。还可以证明，在实际案件工作中可能有必要时，可对单一污渍进行两种增强方法处理，而不会影响STR分型。在方法多样性方面，本文反映了一项关于指纹增强方法后进行STR分型的综合研究，包括罕见方法和技术变体，这在某些案件场景中可能是一种有用的替代方法。
