lespritmodeste:

Blood clot:

Coloured scanning electron micrograph (SEM) of a blood clot (thrombus) in an arteriole (small blood vessel) of a salivary gland. Red blood cells (erythrocytes, red) are trapped within a fibrin protein mesh (thread-like), which is formed in response to chemicals secreted by platelets, fragments of white blood cells (large, round). Clots are formed in response to cardiovascular disease or injuries to blood vessels. Magnification: x1650 when printed 10 centimetres wide.

Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

(Source: lespritmodestee)