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. 2020 Oct 19;21(20):7731. doi: 10.3390/ijms21207731

Figure 1.

Figure 1

Characterization of dental pulp stem cells (DPSCs) derived from young and elderly patients. (a) Cell morphology of DPSCs derived from young and elderly patients at initial culture. Gross view at day 4, day 7, and day 14. (b) Comparison of proliferation potential of DPSCs derived from young and elderly patients in passage 1 (P1) to P3. The number of collected cells was counted at each passage (n = 4) (* p < 0.05). (c) Proliferation ability of young and elderly DPSCs at P2 were analyzed at 24, 48, and 72 h of culture. (n = 4) (* p < 0.05). (d) Comparison of expression of stem cell marker (NANOG) in the DPSCs derived from young and elderly patients at P1 and P3 (n = 4) (* p < 0.05). (e) Comparison of telomere length in the DPSCs derived from young and elderly patients at P1 and P3. The reference genomic DNA sample with known telomere length is shown on the left (n = 3). The experiments were repeated three times, and one representative image is presented.