Figure 1.
Effects of exogenous H2S on the proliferation and viability of human thyroid carcinoma cells and human normal thyroid cells. (a) DNA replication activities of Nthy-ori3-1, TPC-1, TT, and ARO in each group were examined by EdU assay; original magnification ×200. (b) The proliferation rate of each group was analyzed (n = 6). (c) The percentages of viable cells were determined using the MTS assay, and the cell viability of every cell line without NaHS treatment was normalized as 100% and considered to be the control group (n = 3). (d) The percentages of viable cells were determined using the CCK-8 assay, and the cell viability of every cell line without NaHS treatment was normalized as 100% and considered to be the control group (n = 3). ∗P < 0.05, ∗∗P < 0.01 compared with the control group.