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. 2014 Jul 10;4:5653. doi: 10.1038/srep05653

Figure 7. Gene expressions (A) and relative activities (B) of nitrate reductase (NAR), nitrite reductase (NIR), nitric oxide reductase (NOR), and nitrous oxide reductase (N2OR) in the absence (control) and presence of 50 mg/L carboxyl-modified SWNT.

Figure 7

Error bars represent standard deviations of triplicate measurements. Asterisks indicate statistical differences (p < 0.05) from the control test.