Fig. 2.

Antibacterial activity of ferric Ent–Cipro 1 and Ent–SS–Cipro 2 against non-pathogenic and uropathogenic E. coli strains. (a) Laboratory strain E. coli K-12. (b) Probiotic strain E. coli Nissle 1917. (c) Uropathogenic E. coli UTI89. (d) Uropathogenic E. coli CFT073. (e) Laboratory strain E. coli B. (f) Commensal strain from mouse gut E. coli JB2. All assays were performed in modified M9 medium (t = 20 h, T = 30°C; mean ± SDM, n = 3). The conjugates were pre-loaded with 0.9 equiv of Fe(III). Additional data are presented in Fig. S14–S16