Figure 2. Quantification of clinical breast cancer biomarkers.
ESR1: estrogen receptor, PGR: progesterone receptor, ERBB2: human epidermal growth factor receptor-2, TP53: tumor protein p53, MKI67: Ki-67 antigen, EGFR: human epidermal growth factor receptor. Sample labels are shown in the bottom panel. Absolute protein abundance was calculated using intensity-based absolute quantification (iBAQ). Error bars represent S.D. Red dots indicate gene copy number amplification (>7 copies).