False-colour scanning electron micrograph (SEM) of human red blood cells (erythrocytes),showing the initial clotting process,the formation of fibrin filaments that comprise a clot or thrombus. Clotting is a complex,multi-step process: essentially,thromboplastin released from blood platelets & around the injured vessel,in presence of calcium ions,converts prothrombin to thrombin. The presence of thrombin results in transformation of blood protein fibrinogen into insoluble fibrin threads. Numerous erythrocytes surround a clot; some undergo deformation (crenation) in the concentrated plasma environment. Magnification: x675 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Liepins, Dr. Andrejs |
Taille de l’image : | 2626 px × 3131 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |