Keratin
Medical term · K
A protein and the major component of the cuticle and cortex layers of hair; the same protein is found in nails, feathers, claws, and hooves.
Related terms
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CuticleThe outermost, single-cell layer of the hair shaft.
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ProteinOne of the three major nutrients (along with carbohydrates and fats). It is used by the body for building and repairing tissues. Protein is derived primarily from animal sources…
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CortexThe middle layer and main structure of the hair shaft, consisting mainly of compact bundles of the protein keratin.
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KeratinocytesCells of the epidermis that produce a tough protein called keratin and form a soft, protective sheet for the body.