Blood platelets

Numéro d’image : 11869762
Blood platelets
Blood platelets. Coloured scanning electron micro- graph (SEM) of activated blood platelets. Platelet cells (thrombocytes) are formed in the bone marrow,and circulate in the bloodstream in large numbers. When unactivated they are round/oval,whereas activated platelets develop pseudopodia or extensions from the cell wall as seen here. Platelets function in two ways: they plug defects in the walls of damaged blood vessels,and they are involved in the clotting of blood. They also release serotonin which constricts blood vessels. Magnification: x3,300 at 6x6cm size
Licence : Droits gérés
Crédit: Science Photo Library / NIBSC
Taille de l’image : 4134 px × 4193 px
Model Release : Non requis
Property Release : Non requis
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