Osteoblast. Coloured scanning electron micrograph of a bone-making osteoblast cell surrounded by a dense network of collagen fibres. The numerous filipodia on the cell surface project into the surrounding matrix and maintain contact with other osteoblasts. Osteoblasts produce the organic matrix of bone,a substance called osteoid. This consists of a mass of collagen fibres and a glycoprotein cement. As soon as osteoid is formed,calcium salts crystallise inside it to form hard,mineralised bone. Osteoblasts that become trapped in cavities in the bone become osteocytes. Magnification: x2200 at 5x7cm size. Magnification x1100 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CNRI |
Taille de l’image : | 3543 px × 2633 px |
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Property Release : | Non requis |
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