Figure 3.

Box and whisker chart. The dependence of the level of NDRG2 mRNA expression on the tumour grade (pT, TNM scale) in two investigated PTC groups: pT1 (n = 10) and pT2-pT4 (n = 4). The boxes represent means ± SEM. The results were obtained with Spearman's rank correlation test (p > 0.05).