Figure 3: Gene expression of previously known markers (K1C19, DPP4, and FABP4) in normal thyroid tissue and PTC. Gene expression levels of K1C19 and DPP4 were significantly higher in PTC when compared with normal thyroid tissue. In contrast, FABP4 expression was lower (Normal: normal thyroid tissue, PTC: Papillary thyroid carcinoma, * 𝑃 < 0 . 0 5 , Bar: 1 SD).