Effect of rosiglitazone treatment on the protein expression of sodium/iodide symporter (NIS) and epithelial–mesenchymal transition -related proteins in BCPAP and follicular thyroid cancer (FTC)-133 cells. A, The two thyroid cancer cell lines were treated with 0, 10, or 50 μM rosiglitazone under normoxic (N) or hypoxic (H) conditions for 24 h. The protein levels were detected by Western blot analysis. B, The two thyroid cancer cell lines were treated with 0, 10, or 50 μM rosiglitazone under N or H conditions for 72 h. The protein levels were detected by Western blot analysis. HIF, hypoxia-inducible factors.