Fig. 1: TFF3 protein expression by immunohistochemistry.

a An example of TFF3 overexpression in PCa cells (100×). b An example of TFF3 expression in normal prostate tissues (100×). c A proportion of TFF3 IHC score [IS] positives and negatives in PCa and normal prostate tissues. The IS positive (IS 1+ and 2+) proportion of TFF3 in PCa tissues was significantly higher than that in the normal tissues (P = 0.0058). d The mean TFF3 IS in the PCa and normal tissues. The mean TFF3 IS in the tumor tissues was significantly higher than that in the normal ones (4.702 vs. 0.311, P = 2.52 × 10−24)