LPS extraction from A. xylosoxidans was performed using an LPS extraction kit from Intron Biotechnology (17144; Boca Scientific, Boca Raton, FL, USA), according to the manufacturer’s instructions. LPS from Escherichia coli O111:B4 purchased from Sigma-Aldrich, Inc. (L2630; Sigma, USA) was used as a negative control to ensure that the possible effect was specific to A. xylosoxidans LPS. Both LPS of Escherichia coli O111:B4 and A. xylosoxidans A22732 are smooth type. The phage inactivation by LPS was performed as previously described34 (link).
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