Fig. 1From: Macrophage polarization in periodontal ligament stem cells enhanced periodontal regenerationIdentification of PDLSCs. a Single colony formation can be observed after cells were plated in a low density and were stained with methylene blue. b Osteogenic differentiation of PDLSCs. c Adipogenic differentiation of PDLSCs. d The expression of MSC-related surface markers of PDLSCs. Scale bar 100 μm (a), 500 μm (b), and 10 μm (c)Back to article page