Blood cells. Coloured scanning electron micrograph (SEM) of a red blood cell (erythrocyte,red) and white blood cells (leucocytes). These are the two main cell components of blood. Erythrocytes are carriers of oxygen and carbon dioxide. Their biconcave surface provides maximum surface area for the exchange of gases. Leucocytes are involved in the immune system's defence mechanisms,lymph system,and involved in antibody production. Magnification: x7500 when printed 10cm wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gschmeissner, Steve |
Bildgröße: | 4584 px × 3813 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |