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. 2009 Oct 28;118(4):479–484. doi: 10.1289/ehp.0901334

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Treatment with individual PCB congeners differentially alters the expression of TJ proteins in cerebral microvessels of mice 48 hr after treatment with individual PCB congeners (150 μmol/kg) or vehicle. (A) Representative Western blots showing expression levels of claudin-5, occludin, and ZO-1. (B) Quantified results (mean ± SE ) of TJ protein expression obtained by densitometry analysis of Western blots and normalized to actin levels (n = 3–6 per group).

*p < 0.05 compared with vehicle.