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Chemoreceptor localization in filamentous cells of E. coli. Bacteria were immunolabeled with fluorescent anti-MCP serum to identify the subcellular locations of chemoreceptors. (A) Untreated wild-type E. coli (AW405); (B) cephalexin-treated AW405 filaments; (C) untreated cheW mutant; (D) cephalexin-treated cheW filaments. Images are representative (>90%) of those from three independent experiments. Bars, 1 μm.
