Red blood cells. Coloured scanning electron micro- graph of red blood cells. The orange strands are threads of the clotting protein fibrin. Red blood cells are the most abundant type of cell in human blood,accounting for 40% of blood volume. Each cubic millimetre of blood contains around five million of these tiny,flexible disc-shaped cells. The red colour comes from the protein haemoglobin,which picks up oxygen in the lungs and distributes it around the body. Because the cells have no nucleus and are subjected to constant physical pounding,they last only four months,before being destroyed & broken down. Magnification: x3,000 at 5x7cm size. x10,250 at 10x8ins | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Power And Syred |
Taille de l’image : | 4245 px × 3196 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |