Figure 1.

Characterization of ADSCs and luciferase expression evaluation. A, Cultured adipose‐derived adherent cells showed fibroblastic morphology. After induction of osteogenic and adipogenic differentiation, the cells were positively stained by Alizarin Red S and Oil Red O for the detection of bone matrix mineralization and lipid droplet, respectively (B and C). D, After lentiviral transduction of firefly luciferase gene, luciferase expression was evaluated by optical luminescence imaging and the signal was positively correlated with cell number