THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY
Dust mites and their predator. Coloured scanning electron micrograph (SEM) of house dust mites (Dermatophagoides pteronyssinus) and another mite (Cheyletus sp.) that preys on them. Millions of dust mites inhabit the home, feeding on shed skin cells. They mainly live in furniture, and are usually harmless. However, the excrement and dead bodies of both these mites may cause allergic reactions in susceptible people. Magnification unknown.
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