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Spinning-disk confocal microscopy of immunostained airway epithelial cells either untreated (A) or treated with TNF-α/LTβR agonist (B). β1 integrin (green) is upregulated with cytokine treatment and blankets the apical surface of the majority of treated cells, although adjacent cells express no apical β1. Pink, S. aureus; blue, DAPI.
