结论：由于增龄的影响，老年人牙周膜细胞生长增殖功能明显降低。
Conclusions: Under the influence of ageing, proliferation ability of elderly peoples periodontal ligament cells was significantly decreased and was significantly different from that of young peoples.
结果：补肾中药醇提活性成分对人牙周膜细胞增殖能力和ALP活性有增强作用。
Results: the active components extracted by alcohol strengthened the proliferation ability and ALP activity of cultured human periodontal ligament cells.
人牙周膜细胞在弹性膜上体外培养，采用体外培养细胞加载系统加载弹性牵张力。
Human periodontal ligament cells were cultured on the elastic bottom plate and stimulated by elastic stress using mechanical loading system for cultured cells in vitro.
目的：观察中间普氏菌和脆弱类杆菌的内毒素对人牙周膜细胞增殖和超微结构的影响。
AIM: to examine the effect of endotoxin of prevotella intermedia and bacteroides fragilis on proliferation and ultrastructure of periodontal ligament cells in vitro.
目的：建立免疫磁珠法体外分离纯化人牙周膜干细胞的方法。
Objective: To isolate and identify the periodontal ligament stem cells from human molars.
目的：观察模拟咬合压力对人牙周膜成纤维细胞环氧化酶2 (COX 2)基因表达的影响。
Objective: To investigate the influence of simulated occlusion pressure on the cyclooxygenase-2 (COX-2) gene expression in human periodontal ligament fibroblasts (HPLFs).
目的：观察模拟咬合压力对人牙周膜成纤维细胞环氧化酶2 (COX 2)基因表达的影响。
Objective: To investigate the influence of simulated occlusion pressure on the cyclooxygenase-2 (COX-2) gene expression in human periodontal ligament fibroblasts (HPLFs).
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