VOLKER STEGER / SCIENCE PHOTO LIBRARY VOLKER STEGER / SCIENCE PHOTO LIBRARY
Dirty corner. Coloured scanning electron micrograph (SEM) of dirt (brown) in a corner of a house. House dust and dirt comprises mainly shed skin cells, hairs, pollen grains, fungus spores and particles of food. Some of these may cause allergic reactions in susceptible individuals. Magnification unknown.
Model release not required. Property release not required.