Identification and Cementoblastic / Osteoblastic Differentiation of Postnatal Stem Cells from Human Periodontal Ligament

1Salivary Gland Disease Center and the Molecular Laboratory for Gene Therapy and Tooth Regeneration, Capital Medical University School of Stomatology. Tian Tan Xi Li No.4, Beijing 100050, China; 2Oro-dental genetics department, National Research Center, Cairo, Egypt; 3Department of Biochemistry and Molecular Biology, Capital Medical University School of Basic Medical Sciences, You An Men Wai No.10, Beijing 100069, China