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Effect of nebulized perflubron on lanthanum permeability of tight junctions between airway epithelial cells. Mice were exposed to nebulized perflubron for 1 hr and killed immediately, 1 hr, 6 hr, 1 day, and 3 days later. Electron micrographs of representative lung sections were assessed for lanthanum staining of intercellular spaces. Each column represents the average for each condition (n=3–5 for each time point). Data are presented as mean±SEM.
