- Fluoroquinolone treatment of experimental Salmonella enterica serovar Typhimurium DT104 infections in chickens selects for both gyrA mutations and changes in efflux pump gene expression. Randall, L.P., Eaves, D.J., Cooles, S.W., Ricci, V., Buckley, A., Woodward, M.J., Piddock, L.J. J. Antimicrob. Chemother. (2005)