Figure 3.
Effect of different concentrations of extracts (0.1–5%) from hydrogels on NR uptake in cultured fibroblasts after 2 h (A) and 24 h (B) of exposure. **** p ≤ 0.0001, *** p ≤ 0.001, ** p ≤ 0.01, * p ≤ 0.05 versus the control (100%).
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