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Shibuya N, Nemoto E, Kanaya S, Kunii R, Shimauchi H. Retinoic acid is a potential negative regulator for differentiation of human periodontal ligament cells. J Periodontal Res. 2005 Dec;40(6):432–40. doi: 10.1111/j.1600-0765.2005.00811.x. PMID: 16302920. |