The advent of DNA technology has dramatically altered the approach of forensic scientists towards individualization of bloodstains found at the scene of a crime. The search for genetically controlled blood factors in bloodstains has been abandoned in favor of characterizing biological evidence by selected regions of our deoxyribonucleic acid (DNA).
This ability to individualize bloodstain evidence greatly enhances the significance that this type of evidence can have in a criminal investigation and the importance for the crime scene investigator to search, identify, enhance and document blood stain evidence.
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