The Ultrastructure of Tissue Attached to Telogen Hair Roots

The study focused on characterizing the tissues attached to telogen hair roots using transmission and scanning electron microscopy, as these hairs are often submitted for DNA typing in forensic laboratories. The research identified that the tissues consisted of keratinized remnant follicle, nonnucleated epithelial cells, nucleated epithelial cells, and trichilemmal keratin. These findings aligned with the principles of hair follicle regression. The study suggested that recognizing these specific tissue types could improve DNA typing of telogen hairs, emphasizing that the quality of tissue might be more crucial than the quantity for successful DNA analysis.