Non-phospho Ser33/37/Thr41 β-catenin immunolocalization on BEAS-2B and MRC-5 cells stimulated with lipopolysaccharide (LPS). Red-pink colour indicates positive staining (3-amino-9-ethylcarbazole) for non-phospho Ser33/37/Thr41 β-catenin protein. Non-phospho Ser33/37/Thr41 β-catenin staining was found in nuclei (large arrows) in cells stimulated with LPS but not in control-vehicle cells (C). The images (at × 200 magnification) are representative of experiments performed in triplicate. Scale bars = 20 μm.