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. 2017 Feb 2;8:115. doi: 10.3389/fmicb.2017.00115

FIGURE 4.

FIGURE 4

Box and whisker plot showing absorbance ratios (A) A260/A280, (B) A260/A230, and (C) A260/A270 by inhibition status of the DNA extracts. (A) Shows a significant difference (p < 0.001) in the A260/A280 ratios between inhibitory and non-inhibitory samples. Likewise, (C) shows a significant difference in rank for absorbance ratios A260/A270 of inhibitory and non-inhibitory samples in a Mann–Whitney test (p < 0.001). Rrepresents significant difference.