After seeding bone marrow cells into the flasks, many round cells were found adhered to the bottom after 24 hours. The adherent, fusiform-shaped bone marrow mesenchymal stem cells were isolated from the non-adherent hematopoietic cells, which were removed with the medium changes. Small cell clusters were found starting at 3 days after culture, and the number of clusters increased, they fused, and become gradually confluent with cell proliferation over 7–10 days (Figure 2A). To demonstrate the differentiation potential of the bone marrow mesenchymal stem cells, osteogenic and adipogenic inductions were performed over 3 weeks. The results of osteogenic induction via alizarin red staining showed red calcium deposits in the cytoplasm (Figure 2B), and lipid-laden adipocyte phenotype were found after adipogenic induction via oil red O staining (Figure 2C).