Fig. 2From: CpG island status as an epigenetic alteration for NIS promoter in thyroid neoplasms; a cross-sectional study with a systematic reviewa NIS levels in PTC tissues compared to matched non-tumoral tissues. b NIS levels in PTC tissues compared to MNG tissues. Data are presented as median (CI 95%). c Total methylation of NIS promoter in PTC tissues compared to the methylation degree in matched non-tumoral tissues. d the methylation percentage of seven CpGs sites of NIS promoter in PTC tumoral compared to matched non-tumoral tissues. e total methylation percentage of NIS promoter in PTC tumoral compared to the MNG tissues. f the methylation percentage of seven CpGs sites of NIS promoter in PTC tumoral compared to MNG tissues. Data are presented as Mean ± 1SEMBack to article page