Figure 2.
Kaplan-Meier curve of the overall survival time of patients with esophageal squamous cell carcinoma based on PD-L1 expression status. PD-L1, programmed death-ligand 1.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.