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Figure S1. Cell proliferation of AT-Ex-treated cells. (a) NHF, (b) NHK, (c) NHM, and (d) ADSCs were harvested by incubation in 0.5% trypsin, 0.2% ethylenediaminetetraacetic acid (EDTA) at 37 °C. Cell viability was measured by Trypan blue exclusion assay. Histograms represent the number of viable cells after 72 h exposure to AT-Ex at different concentrations (1%, 2%, 5%, and 10% v/v in starved medium). Experiments were performed three times. Graphs represent the mean ± SD of three independent experiments; statistical significance versus untreated control is reported as *p