Coloured Transmission Electron Micrograph of human blood,showing aggregates of red blood cells (erythrocytes) with 2 lymphocytes ( a type of white blood cell) at top. Erythrocytes are biconcave discs packed with haemoglobin (the iron- containing respiratory pigment),functioning in the transport of oxygen & carbon dioxide. Lymphocytes (smallest of white cells) have a sparse cytoplasm (green) & the nucleus is small (chromatin appears red),reflecting a relatively inactive state. When activated during immunological response,the lymphocytes undergo radical structural & metabolic changes. Magnification: X 1500 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CNRI |
Taille de l’image : | 4843 px × 3605 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |