Fig. 7

Effects of varying concentrations of oligonucleotide probes (0–100 picomol/µl) on the reduction of optical density (OD) values generated by TMB oxidation in the presence of 0.2 and 0.3% ZnFe2O4. Statistical significance levels are indicated for comparisons of the effects of different ZFO concentrations on TMB oxidation. Center lines represent medians; box limits correspond to the 25th and 75th percentiles as determined by R software; whiskers extend to the minimum and maximum values; crosses represent sample means; bars denote 95% confidence intervals of the means; and box widths are proportional to the square root of the sample size.