Blood cell formation. Coloured transmission electron micrograph (TEM) of a section through blood cell precursors in mouse bone marrow. The three cells at left with multilobed nuclei and granular cytoplasm are maturing granulocytes,a type of white blood cell. The pink cell with no nucleus is a red blood cell. Continual renewal of blood cells is necessitated by their relatively short lifespan. They are produced by a process called haemopoiesis. The five main cell types (erythrocytes,lymphocytes,granulocytes,monocytes and platelets) all derive from a single type,the multipotential stem cell. Magnification: x3000 when printed at 10 centimetres tall | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Murti, Dr. Gopal |
Bildgröße: | 3870 px × 4996 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |