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Concentrations of synthetic cecropin A lethal for E. coli, the R. rhodnii symbiont, and three strains for T. cruzi. Values for E. coli and R. rhodnii are minimum bactericidal concentrations (MBC). The values for T. cruzi (epimastigote forms derived from cell culture) are concentrations needed to kill 100% of parasites at 24 h of incubation (LC). The DM28 strain was used for our in vivo experiments and is a common human Chagas disease pathogen in Brazil.
