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TEM of P. aeruginosa strain PAK in M63 (A) and in heat-inactivated mucus (2%) containing 5 μM NE and mucus (B). Since in both conditions, i.e., in mucus alone and in 2% heat-inactivated mucus supplemented with 5 μM NE, cells were nonflagellated, only representative cells are shown. Mucus with 100 μM HNEI (C) and heat-inactivated mucus (D). Scale bar, 1 μ.
