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Fluorescence microscopy of corneal epithelial cells grown with (left column) or without (right column) Matrigel at 3 and 5 h postinfection with P. aeruginosa (PA01 lasA lasBA prA) expressing GFP. Increased bacterial retention was observed between 3 and 5 h with or without Matrigel. Greater retention of bacteria was observed with Matrigel-grown cells at 5 but not at 3 h.
