False-colour scanning electron micrograph (SEM) of a blood clot. Known also as a thrombus. Red blood cells (coloured orange) have been trapped behind a web of thin green strands. These threads are composed of a substance called fibrin,formed from an insoluble protein. Fibrin is produced when a blood vessel is injured. Substances released into the blood cause these strands to seal the site from excessive blood loss and create a blood clot,occuring either on the skin surface,in cases of injuries,or inside blood vessels where they are known as a coagulation thrombus,which may lead to a heart attack if it blocks a heart artery. Magnification: x900 at 35mm,x1800 at 6x7cm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Phillips, D. |
Taille de l’image : | 3031 px × 4571 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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