Fig. 1

Isolation and characterization of hPDLSCs. A Clone formation at around 10 days of culture. B Spindle cell morphology of hPDLSCs. C Alkaline phosphatase (ALP) staining after osteogenic differentiation for one week. D Alizarin red S (ARS) staining after osteogenic differentiation for two weeks. E Alcian Blue staining after chondrogenic differentiation for two weeks. F Oil Red O staining after adipogenic differentiation for three weeks