No difference of osteogenic differentiation in ASC derived from different age groups. Parameters of osteogenic differentiation including Alizarin Red staining (A), Osteopontin mRNA (B) and quantification of Alizarin Red (C) were compared in the ASC derived from three age groups (n = 3 in each group). Levels are expressed as mean ± SD. Pre: pre-induction. Post: post-induction.