Figure shows the results of the WST-1 cell viability assay of HSF cells treated with solutions containing 0.032 mg/ml and 0.016 mg/ml of urazole for 2, 6, 24, 48, and 72 hours. As shown in Figure , the hydrogel did not affect the viability of the cells at lower concentrations but reduced cell viability in a dose-and time-dependent manner. Figure shows both while light (left) and confocal microscopy images (right) of the cells on the hydrogel containing 0.032 mg/ml of urazole after 72 h. As can be seen, there was no noticeable change in their morphology.