Comparison of chemoresistance between 2D and 3D culture using multiple cytotoxic compounds. Histogram summarizing the results from viability assays performed on 2D and 3D Panc-1 cell cultures. Different drugs were used at the indicated concentrations. Data are plotted as percentage of the respective untreated control (CTR) and each drug was tested three times in octuplets. Gem: gemcitabine. All: allicin. AX: AXP-107-11.