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Figure 5: Effect of andrographolide sodium bisulfate (ASB) on the level of malondialdehyde (MDA) and collagen content and the expression of matrix metalloproteinase-1 (MMP-1) and MMP-3 in photoaged mice skin. Data represents means ± SD (). compared with the SC group; compared with the VC group. NC, normal control; SC, sham control; MC, model control; VC, vehicle control.