False-col SEM of mass of human blood platelets
Numéro d’image : 11869746
| False-colour scanning electron micrograph (SEM) of a mass of human blood platelets (thrombocytes). Platelets are small,non-nucleated cells formed in the bone marrow,and are present in circulating blood in large numbers. Their shape in an unactivated state is round or oval (2-3 micrometres diameter); activated platelets have dendritic processes,or pseudopodia. Platelets function in 2 ways. Firstly,they help plug defects in the walls of small blood vessels: secondly,they are involved in clotting & also release serotonin,which reduces blood flow by constricting damaged vessels. Magnification: x2,000 at 6x7cm,x1000 at 35mm size | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Photo Insolite Realite |
| Taille de l’image : | 3425 px × 2478 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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