Fig. 6. Cytotoxicity of CS/PEG hydrogel and CS/PEG/PHMB hydrogel. (a) Fluorescence microscopy images of NIH 3T3 cells after incubation with CS/PEG hydrogel and CS/PEG/PHMB hydrogel for 24 h (corresponding scale bars were 200 μm). (b and c) Cell viabilities of NIH 3T3 cells after incubation with different samples for 24 h and 48 h. The data shown was ±SD and these experiments after 3 repetitions.
