CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
House dust. Coloured scanning electron micrograph (SEM) of household dust from Italy. The fibres seen in the image are from clothing or carpeting (grey) and hairs (pink). Household dust also comprises fungal spores, pollen, particles of soil and sand, human and animal hairs. Many of these substances may be allergens, provoking an allergic reaction in humans. Magnification unknown.
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