Fig. 2.
Effect of tetracycline on the interaction between two E. coli strains in gnotobiotic mice.
2A: tetracycline (16 μg/ml) was added into the drinking water at day 3.
2B: No tetracycline in the water.
See Fig. 1 for symbols, except
Solid black squares: rifampicin-tetracycline-R.
