Table 2. Scores of DPP4 activity according to histological diagnoses.

	Staining scores
Histology	0	1	2	3	4	6	9	12
CN (n=55)	43	2	8	2	0	0	0	0
FA (n=54)	41	1	2	1	2	6	1	0
PC (n=59)	4	0	1	2	1	7	7	37
FC (n=32)	6	1	6	3	5	3	3	5

CN=colloid nodule, DPP4=dipeptidyl aminopeptidase IV, FA=follicular adenoma, FC=follicular carcinoma, PC=papillary cancer.

The table presents the number of cases.