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18.7 MB (1.6 MB compressed)
2848 x 2290 pixels
24.1 x 19.3 cm ⏐ 9.5 x 7.6 in (300dpi)
VOLKER STEGER / SCIENCE PHOTO LIBRARY VOLKER STEGER / SCIENCE PHOTO LIBRARY
Vacuum cleaner bag contents. Coloured scanning electron micrograph (SEM) of the contents of a vacuum cleaner bag after cleaning a house. Household dust includes dead insects (as seen here, blue), shed skin, hairs, pollen grains and fungal spores. Some of these may cause allergic reactions in susceptible people. Magnification unknown.
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