Table 3.

microRNAs differentially expressed in PTC and their tissue of origin

Up-regulation	Localization	Sample origin	Down-regulation	Localization	Sample origin
let-7	19q13.41	serum	miR-15a	13q14.2	tumor tissue
miR-31	9p21.3		miR-16	13q14.2, 3q25.33
miR-151-5p	8q24.3		miR-21	17q23.1	serum
miR-146b	10q24.32	plasma, tumor tissue	miR-126	9q34.3	tumor tissue
miR-221	Xp11.3		miR-940	16p13.3
miR-222	Xp11.3
miR-639	19p13.12	tumor tissue