False-colour scanning electron micrograph (SEM) of red blood cells (erythrocytes) densely packed into a capillary,the smallest type of blood vessel. Capillaries are made up exclusively of endothelial cells. Erythrocytes are essentially non-motile bags of haemoglobin; their biconcave shape is an adaptation for maximum surface area over which the exchange of oxygen & carbon dioxide can occur. They are flexible,& can accommodate themselves to the smallest capillaries. Magnification: x600 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Photo Insolite Realite |
Taille de l’image : | 3627 px × 2480 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |