SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY
Kidney blood vessels. Coloured scanning electron micrograph (SEM) of a resin cast of blood vessels (orange) and the units (glomeruli, red) of tightly coiled capillaries found in a kidney. A glomerulus filters toxic waste from the blood. The resulting waste fluid drains to the bladder as urine. This cast was made by injecting resin into the blood vessels, followed by chemical digestion of the surrounding tissues. Magnification unknown.
Model release not required. Property release not required.