Figure 2
From: Detection of erbB2 copy number variations in plasma of patients with esophageal carcinoma
Kaplan-Meier survival curves for e rbB2 copy number variations in plasma from patients with esophageal carcinoma according to clinical characteristics. (A) All patients with EC; (B) EC patients with tumor grading G2; (C) EC patients with adenocarcinoma histology; (D) EC patients with N1 stage disease. The patients are divided according to erbB2 CN ≤2 (solid line) and erbB2 CN >2 (dashed line) subgroups. Data are representative of three independent experiments.