Figure 5: Osteoblast cell viability and proliferation assessed by MTT assay for 7 days. Absorbance was measured in replicates of three and the calculated standard error of the mean (SEM) plotted as error bars. Here, absorbance (490 nm) is directly proportional to cell viability. Osteoblast cell proliferation with CS/nHAp modified decellularized scaffold is shown to be highest after the 7 days of incubation. () stands for insignificant difference () between the scaffolds. () unmarked bars show significant difference between the scaffolds ().