Upregulation of TSHR, TTF-1, and PAX8 in Nodular Goiter Is Associated with Iodine Deficiency in the Follicular Lumen

Table 2

Immunohistochemistry detecting TTF-1 in control and nodular goiter groups.

Group	Staining result
	Cases ()	Negative	Positive	Strong positive	Positive rate (%)	Strong positive rate (%)
Control	30	0	30	12	100	40
Nodular goiter	30	0	30	24	100	80

⁢.