SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY
Brain blood vessels. Coloured scanning electron micrograph (SEM) of blood vessels from the brain. Veins, which carry deoxygenated blood towards the heart, are pink and arteries, which carry oxygenated blood from the heart around the body, are red.
Model release not required. Property release not required.