51.0 MB (3.3 MB compressed)
5067 x 3515 pixels
42.9 x 29.7 cm ⏐ 16.9 x 11.7 in (300dpi)
BSIP VEM / SCIENCE PHOTO LIBRARY BSIP VEM / SCIENCE PHOTO LIBRARY
Platelets. Coloured Scanning Electron Micrograph (SEM) of a cluster of platelet cells adhering to the inside wall of a blood vessel. Platelets play a vital role in blood clotting and in the repair of damage to blood vessel walls. When activated (by physical damage, turbulence or chemical factors) they change shape into spiky cells that mesh together in a clot. Clots of platelets help to seal ruptures in the wall of blood vessels, preventing leakage of blood. Magnification x1000 at 35mm size.
Model release not required. Property release not required.