EYE OF SCIENCE / SCIENCE PHOTO LIBRARY EYE OF SCIENCE / SCIENCE PHOTO LIBRARY
Eyelash mites in skin, coloured scanning electron micrograph (SEM). Eyelash mites (Demodex folliculorum, blue) are harmless parasites that infest follicles (cavities in the skin which contain the roots of hairs) around the eyelids, nose and in the ear canals of humans. They feed on oily secretions from the skin's sebaceous glands, as well as dead skin cells. Infestation is usually symptomless, but in some individuals, allergic reactions to the mites can cause hair loss and acne. Magnification: x700 when printed 10 centimetres wide.
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