Figure 3From: Embryonic stem cells in scaffold-free three-dimensional cell culture: osteogenic differentiation and bone generation ESC micromass cultured for 21 days in the presence of medium containing dexamethasone, ascorbic acid, and ß-glycerolphosphate (DAG). Transmission electron microscopy demonstrated scorching crystallites (a) and collagen fibrils (b) in the mineralized area.Back to article page