Figure 1. Effect of curcumin on viability of GC-1 spg cells. (A) Thiazolyl blue tetrazolium bromide (MTT) assay run on GC-1 spg cells, which was kept in infection or normal conditions. Then, the cells were subjected to rising concentrations (0.1–50 µM) of curcumin for eight hours. (B) MTT assay run on GC-1 spg cells, which were kept in infection or normal conditions. Then, the cells were subjected to 20 µM curcumin for one hour to one day. ^∗ p < 0.05; ^∗∗ p < 0.01.