Fig. 1From: CpG island status as an epigenetic alteration for NIS promoter in thyroid neoplasms; a cross-sectional study with a systematic reviewMethylation status in NIS promoter. a The probable promoter sequence checked for the presence of the most frequent CpG islands for the NIS gene and suggested primers from the MethPrimer website. b Structure of the human NIS promoter gene and the selected seven CpG positionsBack to article page