SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY
Kidney glomeruli. Coloured scanning electron micrograph (SEM) of the mass of capillaries (red), known as glomeruli, which carry blood to be filtered in the kidney. A glomerulus is situated within a Bowman's capsule and is the site of filtration of waste products, which are then drained from the kidneys in urine.
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