Additional file 2: of Comparison of the types of candidate reference samples for quality control of human epidermal growth factor receptor 2 status detection

The detailed results of HER2 protein expression status evaluated by IHC assay. A-1 to A-4 were section of cell lines samples which were derived from MCF-7, MDA-MB-453, SKBR-3, BT474, respectively. B-1 to B-4 were section of agarose gel within cell lines samples which were derived from MCF-7, MDA-MB-453, SKBR-3, BT474, respectively. C-1 to C-4 were section of xenograft tumor samples which were derived from MCF-7, MDA-MB-453, SKBR-3, BT474, respectively. The magnification was 400 power. (PDF 17387 kb