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On the cover: Lipopolysaccharide (LPS) uptake by A549 cells (transformed human lung epithelial cells). A549 cells were incubated with a complex of soluble human CD14 and fluorescent conjugated LPS (green) for 8 h. Intracellular actin filaments were stained red. A diffuse distribution of LPS was observed with more intense staining around nuclei. Lee et al. Intercellular adhesion molecule-1 mediates cellular cross-talk between parenchymal and immune cells after lipopolysaccharide neutralization. J. Immunol. 172:608.
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