Fig. 7. Cytotoxicity assessment of the PVDF, PVDF/NS10, PVDF/NS25 and PVDF/NS50 films. Fluorescence microscopy images of HaCaT cells treated with nothing (A), or leach liquor obtained from (B) PVDF, (C) PVDF/NS10, (D) PVDF/NS25, (E) PVDF/NS50 films, or (F) 0.5%(v/v) Triton X-100 after 1, 2, and 3 days. (G) Corresponding cell viability of HaCaT cells measured using the CCK8 test.