Table S1 - Human Intestinal Cells Modulate Conjugational Transfer of Multidrug Resistance Plasmids between Clinical Escherichia coli Isolates

Number of donor and recipient E. coli colonies recovered after 2 hours of culture in intestinal cell media. After 2 hours of culture, the media from the apical side of the Caco-2 cells was recovered and plated at the appropriate dilutions in LB plates with cefotaxime 2 µg/ml and kanamycin 40 µg/ml. Numbers correspond to the average number of colonies obtained after co-culture with intestinal cells (Fig. 1) and after culture with media from pre-infected intestinal cells (Fig. 2). p value was calculated using Student's t test between the replicates of “with cells” and “without cells” conditions. (DOCX)