Fig. 4: HER2 signals per cell and ratio of HER2/CEP17 in the moderate- and intense-staining tumors.

Both the average HER2 signals per cell (a, p < 0.0001) and ratio of HER2/CEP17 (b, p < 0.0001) were obviously higher in intense HER2-staining tumors than in moderate-staining ones.