Effect of oxLDL on junctional stainings in cultured brain microvascular cells from wild type (Wt) and transgenic (Tg) mice. Immunostaining of brain endothelial cells for transmembrane junctional protein claudin-5 (Cl-5) and occludin (Occl), and cytoplasmic linker protein β-catenin (β-cat) after 100 and 200 µg/ml oxLDL treatment or in untreated controls (C). Red color junctional immunostaining. Blue cell nuclei. Scale bar 25 µm.