ASTRID & HANNS-FRIEDER MICHLER / SCIENCE PHOTO LIBRARY ASTRID & HANNS-FRIEDER MICHLER / SCIENCE PHOTO LIBRARY
Glomerular atrophy. Light micrograph of human kidney tissue showing a number of glomeruli that have atrophied. Each glomerulus appears dark blue (at upper centre, lower right). Tubules of the kidney are also seen (white). The glomerulus is a tightly coiled network of blood vessels inside a Bowman's capsule. Blood plasma filters from the glomerulus through the Bowman's capsule into the kidney tubules, forming urine. When glomerular atrophy occurs, blood flow is reduced and the filtration rate is slowed. This leads to oliguria (low urine production), high blood pressure and urea retention. Magnification: x20 at 35mm size.
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