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Proteomic profile of the outer membranes of P. aeruginosa PAK and its lecB mutant using a 2-D differential fluorescence gel electrophoresis system. Membrane extracts from the wild-type PAK and the lecB mutant were subjected to two-dimensional gel electrophoresis. The normal protein spot is indicated by a circle, whereas the corresponding down-regulated protein in the lecB mutant is indicated by a dashed circle.
