Al-Abdali, I. 2026 Sep 14. Efflux-Mediated Synergy and Preserved in Vitro Selectivity of Zinc Oxide Nanoparticle–Ampicillin Combinations against Multidrug-Resistant Klebsiella Pneumoniae and Pseudomonas Aeruginosa. NIU Journal of Health Sciences. [Online] 12:2