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LPS and KPS profiles of NGR234 and its mutants. SDS-PAGE analysis was performed to detect LPS (A) and KPS (B) synthesized by NGR234 and the acpXL and bacA mutants grown in the absence (−) or presence (+) of apigenin. The arrows indicate the low-mobility bands present in noninduced samples from NGR234 and NGRΩbacA that are absent in NGRΔacpXL.
