Ear wax secretion, SEM

On June 16, 2013 by Tim Newman

Ear wax secretion. Coloured scanning electron micrograph (SEM) of ear wax, or cerumen, being secreted by a gland in the ear canal. Ear wax helps to clean and lubricate the ear canal and prevent the entry of bacteria, water and foreign objects. Magnification: x4000 when printed at 10 centimetres wide.

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