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Fig. 6. (A) Hemolysis histogram of positive control, cross-linked lignin–agarose/SF hydrogel, cross-linked lignin–agarose/SF/ZnCr2O4 nanobiocomposite, and negative control (* = insignificant, P ≥ 0.05). (B) 96-well plate image. These results indicate that the synthesized scaffold has no specific hemolytic activity.