Figure 3: Effect of various concentrations of aluminium on the phagocytic activity of ARPE-19 cells. There was statistically significant reduction in the phagocytic activity at each concentration indicated horizontally as μmol which featured a peak decrease of 92,45% (± 8,21) at 1000 μmol. Values represent means ± S.E.M. (n=36 for each group; ***p< 0.001, Mann- Whitney U test).