LX-2, HT-29, and THP-1 cells were obtained from the American Type Culture Collection (ATCC; Manassas, VA). Cells were cultured in RPMI 1640 medium (Gibco) supplemented with 10% fetal bovine serum (FBS) (Gibco), 100 U/mL penicillin, and 100 mg/mL streptomycin. C29 was purchased from Med Chem Express (NJ, USA). In this study, the most common clinical strain of Enterococcus was used (40 (link), 41 (link)). Enterococcus faecalis was grown in LB agar powder (Sango Biotech) in a shaker at 37°C for 8 h.
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