Immunohistochemistry demonstrated that most specimens demonstrated negative correlation of Beclin 1 and ZEB1 or AUF, while positive correlation of AUF1 and ZEB1 signals (Figure 6D), further supporting increase in ZEB1 by Beclin 1 downregulation via AUF1 upregulation in thyroid cancer tissues. Here, ZEB1 is linked to thyroid gland carcinoma.