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. 2019 May 2;19:369. doi: 10.1186/s12879-019-3994-3

Fig. 1.

Fig. 1

Extracellular antimicrobial activities of LL-37 (filled circles), doxycycline (DOX) (filed squares), CSA-13 (filled diamonds), CSA-131 (filled trianges) and combination of LL-37 with doxycycline (empty circles), LL-37 with CSA-13 (empty squares) and LL-37 with CSA-131 (empty triangles) against four clinical strains of E. coli (*) in log phase (Panels a-d)