Importance in forensics
Hair can easily be discredited as belonging to a human with the presence of medulla. Most other mammals possess one which is easily visible under a microscope. Humans of Middle-Eastern origin, however, do, in fact, possess a thin, less visible medulla. The medulla cannot be used to define species, only to distinguish animal hairs from human hairs with a similar appearance ie: ferrets and koalas to name two examples.
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