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. Author manuscript; available in PMC: 2018 Jul 19.
Published in final edited form as: ACS Appl Mater Interfaces. 2017 Jul 3;9(28):23325–23332. doi: 10.1021/acsami.6b15387

Figure 4.

Figure 4

Photo of 0, 5, 10, 20, 50, 80, 100 µg mL−1 MnO2 nanotubes treated with GSH (4 mM) after 15 mins (a). T1 rates (b) and T1 rate map (c), T2 rates (d) and T2 rate map (e) against various Mn2+ concentrations measured after MnO2 nanotubes were treated with GSH. Dashed circle indicates location of (−) nanotube phantom.