ABCB4 and gallbladder adenocarcinoma: The anticancer activity of these compounds was evaluated against G-415 (Human gallbladder adenocarcinoma), Gbd1 (Human gallbladder adenocarcinoma), U-937 (human histiocytic lymphoma), HeLa (human cervix adenocarcinoma), and T98G (human glioblastoma multiforme) cell lines.