Figure 1From: Very low prevalence of epidermal growth factor receptor (EGFR) protein expression and gene amplification in Saudi breast cancer patientsEGFR protein expression by immunohistochemistry and gene amplification by SISH in a case of metaplastic breast carcinoma. A) Membrane positivity by immunohistochemistry, × 100 B) No gene amplification (less than 5 gene copies per nucleus) by SISH, × 400.Back to article page