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Changes in phosphorylation of STAT3 at tyrosine 705 (pSTAT3-Tyr705) as assessed by Western blotting. The panel shows the immunoreactive bands of pSTAT3-Tyr705. Lane 1: cytosolic fraction of control mice, Lane 2: cytosolic fraction of tobacco smoke exposed mice, Lane 3: nuclear fraction of control mice, Lane 4: nuclear fraction of tobacco smoke exposed mice. β-Actin was used as a loading control.
