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. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: Neurotoxicology. 2017 Jun 23;64:50–59. doi: 10.1016/j.neuro.2017.06.011

Figure 1.

Figure 1

a) MRI longitudinal relaxation rates (R1) in basal ganglia regions of interest [caudate nucleus (CN), putamen (PUT), globus pallidus (GP)] for welders and controls; b) PI (pallidal index) for welders and controls. Data represent the mean ± standard errors (SEM).; c) R1 in the globus pallidus (GP) and putamen (PUT) as a function of welding hours (HrsW90) collapsed across welders and controls [modified from Lee et al. (2015)].