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cuticle
A cuticle , or cuticula, is a term used for any of a variety of tough but flexible, non-mineral outer coverings of an organism, or parts of an organism, that provide protection. Various types of "cuticle" are non-homologous, differing in their origin, structure, function, and chemical composition.
==Human anatomy==
In human anatomy, cuticle (sometimes confused with eponychium) refers to several structures. It refers to the layers of epidermal cells or keratinocytes that produce the horn protein keratin, and also to the superficial layer of overlapping cells covering the hair shaft (cuticula pili) that locks the hair into its follicle (See also Cuticle (hair)).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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