Figure 5: Effects of PFOS on the expression of miR-16 and miR-22 in SH-SY5Y cells. (a and b) miRNA (miR-16 and miR-22) expression was determined by quantitative real-time PCR, and the data were normalized to U6 as an internal control. Each data point was normalized to the control (DMSO), and the data are presented as mean ± SD from three independent experiments. , experimental values compared with control values.