Fluorescence of Salmonella /pP cad -gfp or Salmonella lexA3 /pP cad -gfp in untreated (0 h) or enrofloxacin-treated mice. The vertical line separates GFP + responders from GFP non-responders. The inset shows the median fluorescence (MFI) of GFP + cells, the line connects the geometric means (test for non-zero slope in a linear regression of log-transformed values). The histograms represent pooled data, circles in the inset graph represent individual mice (1 h, n = 5; 3 h and 4 h, n = 4).
