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Initiator analysis (A) Relative survival of G292 cells cultured in cell culture medium supplemented with increasing initiator concentrations. I2959 (●); LAP (●). Cell survival was quantified using an ATPlite viability assay. Data are presented as means ± SEM. * p < 0.05; *** p < 0.001. (B) UV/Vis spectrum showing the absorbance of collagen, LAP and I2959 solutions. Collagen (―); I2959 (-⋅-); LAP (―).
