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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

Table 3.

Relative Genotoxic Potential of 4 Nitroxides

MLA Without S9
MLA With S9
Comet Assay
Nitroxide BMDL10a Ranking BMDL10a Ranking BMDL10a Ranking

TEMPO 0.981 3 0.257 2 0.454 1
4-hydroxy-TEMPO 1.300 4 1.024 4 1.612 3
4-oxo-TEMPO 0.661 1 0.058 1 1.114 2
4-methoxy-TEMPO 0.756 2 0.770 3 3.358 4
a

BMDL10, the lower limit of the 10% BMD, is calculated from Hill model of the PROAST Software using chemical as a covariate for both the MLA MF data and the %DNA in tail data from the Comet assay.