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22.1 MB (2.3 MB compressed)
3145 x 2461 pixels
26.7 x 20.8 cm ⏐ 10.5 x 8.2 in (300dpi)
STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Kidney glomerulus. Coloured scanning electron micrograph (SEM) of podocyte cells on a glomerulus in the kidney. Glomeruli are made up of a tight knot of blood capillaries covered in podocyte cells with swollen nuclei (one seen at upper centre) and thin extensions. These tiny filtration units remove toxic waste products from the blood. Filtration occurs through the filtration slits between the interlocking pedicles (the terminal extensions of the podocytes). Filtered fluid then passes into the cavity of the surrounding Bowman's capsule, and drains to the bladder as urine. Magnification unknown.
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