方法：采集健康的牙龈组织和牙周膜，体外培养牙龈成纤维细胞和牙周膜成纤维细胞。

Methods: Healthy human gingiva and periodontal ligament were acquired from patients, then gingival fibroblasts and periodontal cells were cultured in vitro.

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方法：采集健康的牙龈组织和牙周膜，体外培养牙龈成纤维细胞和牙周膜成纤维细胞。

Methods: Healthy human gingiva and periodontal ligament were acquired from patients, then gingival fibroblasts and periodontal cells were cultured in vitro.

youdao