4Nimni ME. Polypeptide growth factors: targeted delivery systems [J]. Biomaterials,1997,18(18):1201-1225.
5Groenveld MC, Evert V, Beertsen W, et al. Expression of extracellular matrix proteins in human periodontal ligament cells during mineralization in vitro [J]. Dent Res,1993,72:13dd-1350.
6Nagatomo K, Komaki M, Sekiya I, et al. Stem cell properties of human periodontal ligament cells [J]. Periodontal Res,2006,41(4):303-310.
7vander Berg WB, Vander Kraan PM, Scharstuhl A, et al. Growth factors and cartilage repair [J]. Clin Orthop Relat Res,2001,391:244-250.
8Gao J, Symons AL, Bartold PM. Expression of transforming growth factor-beta receptors types Ⅱ and Ⅲ with in various cells in the rat periodent [J]. Periodontal Res,1999,34(2):113-122.
9Esposito E, Pastesini C. Controlled release of 1-D-arabinofuranosyl-cytosine from hydrophilic gelatin microsphere: in vitro studies [J].Inter J Pharm,1995,17: 151-158.
10Newman KD, Mcbumey MW. Poly(D, L lactic-co-glycolic acid) microspheres as biodegradable microcarriers for pluripotent stem cells [J]. Biomaterials, 2004,25(26):5763-5771.
