Figure 2From: Chitosan Hydrogel as siRNA vector for prolonged gene silencing Viability for cells incubated with chitosan hydrogel alone or coupled with siRNA. Cell viability was assessed by MTT assay at 72 h post-transfection. The relative absorbance (at 570 nm) was measured and normalized to the level of non-treated control. Data was presented as mean ± SD (n = 3).Back to article page