Tuesday, September 8, 2009

Hair and Fiber analysis


Two of the most important sources in forensic science are hair and fiber in most cases it is the key target to help unmask an attacker or assaulter. If a hair is found on the body or clothing of the victim it can usually determine race, sex, and to compare DNA. As for fibers they can determine what the attacker was wearing when the incident occurred. Forensics scientist use this analysis to determine the precise garment and the manufacture. Both of these samples are normally collected at the sight of the crime or at the autopsy. Police use these samples to narrow the suspect down or to eliminate some people. The samples are collected and stored in vials, tubes and grip seal bags. This is so that the samples will not cross contaminate. During the analysis the victims clothing may be searched for body fluids such as blood, semen or saliva and following this procedure scientist then look for hair not matching the victims' and any fiber that does not appear to be from the same garments that the victim was wearing. These materials are then collected and stored so that further examination can take place at later stage.

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