Hussein, Z.R. and Ghareeb , A.M. 2025. Enhancing the Antibacterial Activity of Ciprofloxacin Against Klebsiella pneumoniae by Inhibiting the AcrAB-TolC Efflux Pump System Using Phenylalanine-arginine β-Naphthylamide . Al-Rafidain Journal of Medical Sciences ( ISSN 2789-3219 ). 8, 1 (Feb. 2025), 56–61. DOI:https://doi.org/10.54133/ajms.v8i1.1660.