Fig. 5From: Optimization of bacterioruberin production from Halorubrum ruber and assessment of its antioxidant potentialCellular antioxidant activity of BR extract at different concentrations. (a) Scheme of cellular antioxidant activity (b) cellular antioxidant activity unit and (c) cell morphology. Asterisk symbols (*) indicate significant differences between others (*p < 0.05)Back to article page