Figure 1From: Serum epidermal growth factor receptor and HER2 expression in primary and metastatic breast cancer patientsEGFR and HER-2 serum levels. (a) Epidermal growth factor receptor (EGFR) and (b) human epidermal growth factor receptor (HER)2 serum levels at time of (1) primary and (2) metastatic diagnosis. sEGFR, serum EGFR; sHER2, serum HER2.Back to article page