Morellic Acid B Overcomes P‑Glycoprotein-Mediated Multidrug Resistance in Hepatocellular Carcinoma Cells via Regulation of MAPK/NF-kB Signaling Pathways - Xue-Ni CAI; Qi CHEN; Rui-Ming LIU; Hai LAN; Ying XIE (ACS Omega)