30.0 MB (2.7 MB compressed)
3500 x 3000 pixels
29.7 x 25.4 cm ⏐ 11.7 x 10.0 in (300dpi)
ROGER HARRIS / SCIENCE PHOTO LIBRARY ROGER HARRIS / SCIENCE PHOTO LIBRARY
Blood clot. Computer artwork of a blood clot (orange) in a blood vessel. When platelet blood cells (not seen) come into contact with a damaged blood vessel wall, they are activated and adhere to the site of the wound. They release chemicals that lead to the formation of threads of the insoluble protein fibrin (also not seen). A fibrin mesh traps red blood cells (red), forming a clot. The clot seals the wound and prevents bleeding. An abnormal clot (thrombus) can occur in an intact blood vessel, where it can cause heart attacks and strokes.
Model release not required. Property release not required.