Figure 6.

Proliferation of chondrocytes after 4, 8, and 12 days of culture (a). The results were obtained via a WST-8 assay (* significantly different results between Cur_WPI biomaterial and polystyrene (PS) at the same time of incubation; ^$ significantly different results compared with Cur_WPI biomaterial at day 4; ^# significantly different results compared with Cur_WPI biomaterial at day 8; ^% significantly different results compared with PS at day 4; one-way ANOVA test followed by Tukey’s multiple comparison, p < 0.05). Confocal microscope images showing morphology of chondrocytes cultured on Cur_WPI biomaterial and polystyrene (PS, control) after 4-, 8-, and 12-day incubation (b). Nuclei emitted blue fluorescence (visible blue fluorescence in the structure of biomaterial was emitted by WPI), while F-actin filaments gave red fluorescence; magnification 200×, scale bar equals 70 μm.