β-catenin localisation following Li, and EGF + Li stimulation. Under all EGF and/or Li treatments β-catenin remained intense at the membrane (see white arrows). a) Li alone, (3 hrs) induced a cytoplasmic β-catenin localisation in WHCO5 (blue arrows). b) EGF and Li together, (3 hrs) induced β-catenin to locate to the cytoplasm and nucleus (yellow arrow) in WHCO5 (see results for details). 400× magnification. (FITC excitation 490; emission 525).