Co-interaction of nitrofuran antibiotics and the saponin-rich extract on gram-negative bacteria and colon epithelial cells. - Grzywaczyk, Adam; Smułek, Wojciech; Olejnik, Anna; Guzik, Urszula; Nowak, Agnieszka; Kaczorek, Ewa (World Journal of Microbiology & Biotechnology, 2023)