Figure 4
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fbcr3208/MediaObjects/13058_2012_3010_Fig4_HTML.jpg)
Tumor that displayed HER2 protein overexpression in the absence of gene amplification (mono color SISH negative). HER2, human epidermal growth factor receptor 2; SISH, silver in situ hybridization.
Tumor that displayed HER2 protein overexpression in the absence of gene amplification (mono color SISH negative). HER2, human epidermal growth factor receptor 2; SISH, silver in situ hybridization.