Dust mite. Scanning electron micrograph (SEM) of a dust mite (Dermatophagoides pteronyssinus), showing its ornately sculptured cuticle. Dust mites are
Dust mite. Scanning electron micrograph (SEM) of a dust mite (Dermatophagoides pteronyssinus), showing its ornately sculptured cuticle. Dust mites are tiny, eight-legged relatives of spiders that feed on the dead scales of human skin in household dust. Smaller than full stops, they are invisible to the naked eye but exist in their thousands throughout the home, crawling through the fabric of furniture and beds in search of food. Fragments of their dead bodies and excrement are thought to be a major cause of asthma and allergy to household dust. Magnification: unknown.
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Photo credit: © K. H. KJELDSEN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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