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Dynamics of bacterial resistance phenotypes in E. coli. Pink, susceptible; red, AbAR (AMP); violet, AbFR (FLQ); brown, AbAR and AbFR; light blue, AbAR and AbCR; dark blue, AbAR, AbCR, and AbFR; light green, AbCR; olive green, AbCR and AbFR. In ordinates, numbers of hecto-cells (h-cells; packages of 100 identical cells) in all hosts per milliliter (with each host represented by 1 ml of colonic content); in abscissa, time (1,000 steps, roughly equivalent to 42 days).
