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. Author manuscript; available in PMC: 2013 Mar 1.
Published in final edited form as: Carbon N Y. 2012 Mar 1;50(3):1303–1310. doi: 10.1016/j.carbon.2011.10.053

Figure 5.

Figure 5

Percent change of 1.2 μg/mL HRP activity by 10 μg/mL SWCNTs-COOH and absorbance of 25 μg/mL SWCNTs-COOH at 1,050 nm under different pHs. Ten μM H2DCF was used as substrate for HRP.