Red and white blood cells,illustration. Red blood cells (erythrocytes,red) distribute oxygen to body tissues,and carry waste carbon dioxide back to the lungs. White blood cells (leucocytes,yellow-blue) are part of the immune system. They attack and destroy infectious agents (pathogens) and foreign substances,and destroy and remove cellular debris. There are different types of leucocyte,with some having a multi-lobed nucleus,and some (shown here) having a single large nucleus | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Singh, Harvinder |
Taille de l’image : | 3764 px × 2823 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |