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特許 係属中 The growth of human hair is everywhere on the body, except for the soles of the feet, the palms of the hands, the lips, and the eyelids, apart from eyelashes. Like skin, hair is a stratified squamous, keratinized epithelium made of multi-layered, flat cells with overlying keratin (a protein), whose rope-like filaments provide structure and strength to the hair shaft.