What is used in the examination of hairs, fibers, and fingernail scrapings?

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Criminalistics, a subfield of forensic science, deals with the examination and analysis of physical evidence such as hairs, fibers, and fingernail scrapings in order to determine their origin and assist in criminal investigations. Ballistics is the study of projectiles and firearms, while Serology is the analysis of bodily fluids such as blood and semen. Chemistry, although used in forensic science, does not specifically pertain to the examination of these types of evidence.

What Is Used in the Examination of Hairs, Fibers, and Fingernail