Fig. 1

CDH22 protein expression in breast tissues. CDH22 protein expression was measured by immunohistochemistry in 88 pairs of breast tumoural and adjacent-to-tumour tissues, along with 24 non-neoplastic samples from reduction mammoplasties. Expression levels were scored as 0, no expression; 1, weak expression; 2, intermediate expression; and 3, strong expression (*p < 0.001). Images were acquired using a Leica 4000B microscope (Leica, Wetzlar, Germany) at ×200 magnification. Contingency table shows the association between the tissue type and CDH22 immunohistochemical expression