Osteoblasts. Coloured scanning electron micrograph (SEM) of bone-making osteoblast cells (irregular ovals). They are surrounded by the bone matrix they have created. 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 crystallize inside it to form hard, mineralised bone. Osteoblasts that become trapped in cavities in the bone become osteocytes. Magnification unknown.

Photo website with Rights Managed and Royalty Free stock photos, images, illustrations and footage available for download immediately for commercial and editorial uses. Aflo is a leading independent supplier and producer of stock pictures and visual content. Search and find high quality images and video for design, print, web-use and publishing. Buy photos from our extensive collection of model released and property released sports images. Search some of the most beautiful travel and landscape pictures from our own photographers and license from our large collection of content, modern and archive, focusing on Japan. We provide free research. Register for personal account management and for full use of our Stock Photography website and start to download images now.