NDRG2 mRNA levels are down-regulated in tumor tissue from thyroid cancer patients. mRNA expression of NDRG2 and Myc, respectively, was determined by real-time RT-PCR and normalised to β-actin in normal and affected tissue from thyroid cancer patients. Lines represent mean expression. * p < 0.05 compared to the normal group using a two-tailed Mann-Whitney test. No correlation was found between NDRG2 and Myc mRNA levels using a Spearman's correlation test.