Osteocyte. Coloured scanning electron micrograph (SEM) of a freeze-fractured osteocyte (purple) surrounded by bone (grey). An osteocyte is an osteoblast (a bone-producing cell) that has become trapped within a bone cavity. The fracture plane has revealed details of the internal cell structure,including a large,dark concave region that was the site of the cell nucleus. Osteoblasts produce the organic matrix of bone that is called osteoid. This consists of a mass of collagen fibres and a glycoprotein cement. As soon as osteoid is formed,calcium salts crystallize inside it to form hard,mineralised bone. Magnification: x4000 at 6x7cm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 4724 px × 4036 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |