False-colour scanning electron micrograph (SEM) of a single red blood cell,or erythrocyte,coloured pink. Nestling in the dish formed by the erythrocyte's biconcave shape is an unactivated platelet,or thrombocyte,coloured yellow. Erythrocytes function in the distribution of oxygen & carbon dioxide around the body. Their shape is adapted for maximum surface area for gaseous exchange; blood gases are carried by haemoglobin,which packs the interior of the red cells. A mature erythrocyte has no nucleus. Blood platelets help repair damaged blood vessels & are involved in the clotting process. Magnification: x5700 at 6x4.5cm size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Dowsett, A. / Public Health England |
Bildgröße: | 3955 px × 4691 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |