Images of osteoblast and inflammatory cells in osteoarthritic women under TEM. A. Rough endoplasmic reticulum with plenty of folds and swollen mitochondria. (×17500). B. Osteoblasts linked to the neighbouring one by prominence. (×7400). C. New columned osteoblasts in a ray. (×5800). D. Inflammatory cells. (×4200). E. One inflammatory cell infiltrated into the bone. (×4200).