Figure 2From: Prognostic value of epidermal growth factor receptor expression in operable non-small cell lung carcinomaValore prognostico dell’espressione del recettore per il fattore di crescita epidermico nel carcinoma polmonare non a piccole cellule operabileSurvival curves of nsclc patients with positive or negative expression of egfr. Definition of abbreviations: see Figure 1.Back to article page