Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1476-4598-11-79/MediaObjects/12943_2012_Article_1061_Fig1_HTML.jpg)
Detection of p-ERK1/2 expression in IBDC and non-neoplastic tissues using immunohistochemistry. P-ERK1/2 was not detected or very weakly expressed in non-neoplastic breast ductal cells (A), but was frequently expressed in both the cytoplasm and nucleus of IBDC cells (B to D). B to D represented different intensities of p-ERK1/2 positive staining in IBDC. Images in the left panel were ×100 magnification; and expanded on the right at ×200.