African hair, SEM

African hair, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Human hair. Coloured scanning electron micrograph (SEM) of a single head hair from an African male. Follicles that are round in cross-section give rise to straight hair. Those out of which curly hair grows are oval. Very tightly coiled hair is due to the nearly flat, ribbon-like structure of the follicles. This hair texture is very common in people of African ancestry. The tight curls create stresses at each turn in the hair fiber. The hair strands become weak and fragile, making them prone to breakage. Magnification: x25 when printed at 10 centimetres wide.

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Keywords: africa, african, anatomical, anatomy, biological, biology, black background, coloured, ethnicity, false-coloured, follicle, hair, hairs, head, healthy, human body, keratin, normal, scanning electron micrograph, scanning electron microscope, sem, shaft

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