Human eyelash hair, SEM

Human eyelash hair, SEM

C031/9834 Rights Managed

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Credit: DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY

Caption: Human hair with damaged cuticle, coloured scanning electron micrograph (SEM). An eyelash hair showing damaged keratinized cell surface along with dead skin cells. The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together. Hair is made up of a fibrous protein called keratin. Internally the hair shaft is divided into three concentric sheaths (layers) called the medulla, cortex and outer cuticle. Hair is non-living tissue. Hair grows from a hair root (bulb) embedded in the skin. Hair growth occurs when epidermal cells divide at the base of the root bulb. Hair is non-living tissue. Magnification: x100 when shortest axis printed at 25 millimetres.

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Keywords: 23010c, colored, coloured, cortex, cuticle, damaged hair, dandruff, dead skin, eyelash, false-colored, false-coloured, fibrous protein, hair, hair bulb, hair cortex, hair cuticle, hair growth, hair medulla, hair scale, hair scales, hair shaft, hair shafts, healthy hair, human body, human eyelash, human hair, human hairs, keratin, keratin hair, keratin scale, keratin scales, keratinized, keratinized cell, medical, medulla, non-living tissue, normal hair, outer cuticle, outer hair cuticle, overlapping scales, protein, protein filament, protein filaments, scale, scales, scanning electron micrograph, sem, skin cell, skin cells

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