Figure 3.
Cell viability (by MTT assay) of HT-29 cancer cells treated with Au NPs bearing different surface ligands, at three different concentrations, under a) normoxic and b) hypoxic conditions. Au NPs-LA-PEG2000-CAI (100 µM) were able to kill cancer cells under hypoxic conditions in a statistically-significant manner (P < 0.05).