Figure 2.

The methylation frequency of 11 drug metabolism and transport genes in nodular goiter and normal thyroid tissues. A total of 27 nodular goiter and 23 normal thyroid tissues were analyzed for this study. MSP was used to detect promoter methylation of 11 genes, including ABCB1, ABCB4, ABCG2, SLC1A2, SLC19A3, SLC26A2, CYP1A1, CYP1B1, CYP24A1, CYP27B1 and CYP39A1. *, P < 0.05.