Figure 5 (A). Effect of opuntiol on UVA-induced loss of mitochondrial membrane potential in NIH-3T3 cells. Photomicrograph shows the fluorescence observed under a green lamp (original magnification, 20X). (B) Bar diagram representing percent of fluorescence intensity using a multimode reader (Tecan, Austria). Values are given as means ± S.D. of six experiments in each group. Values not sharing a common marking (a,b,c...) differ significantly at p ≤ 0.05 (DMRT).