Podocyte cells, false-color SEM, by Thomas Deerinck. Podocyte cells form interweaving extensions, called pedicles, that infiltrate the kidneys’ capillary system. Toxic waste is extracted as it moves through the pedicles’ interlocking filtration slits.
Inner ear hair cells. Coloured scanning electron micrograph (SEM) of sensory hair cells from the inner ear. These cells are surrounded by a fluid called endolymph. As sound enters the ear it causes waves to form in the endolymph, which in turn cause the hairs to move. The movement is converted to an electrical signal that is passed on to the brain. Each crescent-shaped arrangement of hairs lies atop a single cell.
Staphylococcus sp. Coloured scanning electron micrograph (SEM) of a colony of Staphylococcus sp. bacteria on the epithelial cells of the trachea. The trachea (windpipe) is lined with cilia (hair- like projections) which help keep it free of dust and other irritants. These Gram-positive bacteria often appear in groups that resemble clusters of grapes (as here)