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Acid extracts (in 0.1% acetic acid) of supernatants of detached and cultured (for 3 h [▪] or for 18 h [▴]) villus epithelial cells mediate antimicrobial activity. Microtiter plate antimicrobial assays were performed with S. typhimurium CS015, and 0.1% acetic acid only (•) was used as a control. The data represent one of three experiments performed.
