Fig. 4

Kaplan–Meier curves showing (a) progression-free survival and (b) overall survival of lung adenocarcinoma patients with positive and negative IDO1 expression (cutoff of H-score = 5)
Kaplan–Meier curves showing (a) progression-free survival and (b) overall survival of lung adenocarcinoma patients with positive and negative IDO1 expression (cutoff of H-score = 5)