Fig. 1From: Immunohistochemical expression of epidermal growth factor receptor (EGFR) in South Asian head and neck squamous cell carcinoma: association with various risk factors and clinico-pathologic and prognostic parametersEGFR expression in head and neck squamous cell carcinoma. a, b Positive EGFR expression 3+, > 70% cells; c, d Negative EGFR expressionBack to article page