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Effects of ginsenosides on human periodontal ligament (HPDL) cells’ viability and confluency. The HPDL cells were incubated 1 × 104 cell/mL for 24 h, then after treatment with each indicated concentration of ginsenosides for 24 h, cell viability was analyzed through an MTT assay (A). Cell confluency was determined using the Incucyte® Live-Cell assay system to mark the cell confluency of normal cells (B).
