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T2R bitter taste receptor expression in airway cell cilia. Representative images of cilia marker β-tubulin IV (green), T2R38 (cyan) and T2R14 (magenta) immunofluorescence in an apical confocal section of primary human sinonasal ALI. (Left) shows conventional look-up table (LUT) and (right) shows inverted LUT. Scale bar is 20 µm.
