Fig 1: Morphological characteristics of MSCs and flow cytometry results. (A and B) Passage 3 MSCs from AIS patients and controls, respectively. (C and D) Adipogenic MSCs at 14 days stained with Oil red O. Magnification, ×100. (E and F) Results from flow cytometric analysis. MSCs from AIS patients and control subjects, respectively. CD29, CD44, and CD105 expression were positive, while CD34 and CD45 expression were negative, demonstrating that the cells were MSCs. MSC, mesenchymal stem cell; AIS, adolescent idiopathic scoliosis; CD, cluster of differentiation.