Cytotoxicity tests
Cells grown in 96 or 48 well plates were exposed to different concentrations of GA for 24 h. Cell viability was determined by Alamarblue® assay (Thermo Fisher Scientific, Catalog number: DAL1025). Pair-wise Student t-tests were used to compare the outcome of a treatment as compared to the control. Error bars are SEM (n ≥ 3).