Membrane marker expression in normal breast epithelium and breast cancer. Images of representative breast cancer cases with the corresponding normal breast epithelium that were scored as positive. A. Expression of tumor-specific markers with low or no expression in normal breast epithelium. B. Expression of membrane markers that are also expressed in normal breast tissue. The intensity in the normal breast epithelium was classified as moderate or high. Size bar equals 50 μm.
Vermeulen et al. BMC Cancer 2012 12:240 doi:10.1186/1471-2407-12-240