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. 2022 Aug 9;19:56. doi: 10.1186/s12989-022-00496-5

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© The Author(s) 2022

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Fig. 9 — Group mean ± S.E. levels of serum glutathione (µM; left panel) and Il1-a (pg/ml; right panel) in males and females (as indicated) exposed to filtered air or to Fe (GSH: n = 10/group; ll-1a: n = 9–10/group) or Fe + SO₂ (GSH: n = 6–8/group; Il1-a: n-3–8/group); * = significantly different from same sex filtered air control; ~ = marginally different from same sex filtered air control