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(A) Primary periodontal ligament cells (hPDLCs) extracted from periodontal ligament were cultured for 14 days. (B) Mineral deposition by hPDLCs after 10 days in osteogenic medium was observed by alizarin red staining. Magnification, ×10 for A; Magnification, ×40 for B. The scale bar represents 100 µm.
