Release and erosion of TBC films loaded with: (a) 64 µg quercetin, (c) 39 µg pirfenidone, (e) 640 µg quercetin, and (g) 390 µg pirfenidone. Release versus erosion of TEC films loaded with: (b) 64 µg quercetin, (d) 39 µg pirfenidone, (f) 640 µg quercetin, and (h) 390 µg pirfenidone. Data are mean ± standard deviation (n=3). The following symbol denotes statistical significance: * when p < 0.05.