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. Author manuscript; available in PMC: 2019 Feb 25.
Published in final edited form as: Toxicol Sci. 2018 May 1;163(1):214–225. doi: 10.1093/toxsci/kfy022

Figure 1.

Figure 1.

Relative viability of mouse lymphoma cells exposed to TEMPO and its derivatives. Cells were exposed to various concentrations (0.5–10 mM) of 4 piperidine nitroxides for 4h and cell viability was measured using the ATP, Titer Blue, and MTS assay. (A) TEMPO; (B) 4-hydroxy-TEMPO; (C) 4-oxo-TEMPO; (D) 4-methoxy-TEMPO. The data points represent the mean ± SD from 3 independent experiments with 4 parallel replicate wells per concentration in each experiment. * p < .05 and ** p < .01 compared with the vehicle control.