Hair Protein Polymorphism and Its Application to Forensic Science Hair Comparison.

The document reviewed the heterogeneity of keratin, the primary protein in hair, which is naturally insoluble and resistant to proteolytic enzymes. This heterogeneity, particularly when keratin is reduced at disulfide cross linkages, was significant for forensic science, aiding in species identification and individual discrimination in hair comparisons. The review critically discussed variations in hair protein due to genetic or acquired origins, emphasizing their application in forensic hair analysis.