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Total TGF-β protein levels in lung tissue homogenates from B6 and D2 mice 10 and 21 d after aspiration of PBS or 4mg/kg V2O5. Bars represent means + se of 4 mice/group. +P < 0.001 vs. B6 mice within time point and treatment group; ‡P < 0.001 vs. d 10 within strain and treatment.
