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.
PD-1 expression and PD-L1 expression in CAS. PD-1-positive cells with tumor site PD-L1 expression was significantly related to improved outcomes (A). Representative double immunofluorescence staining of PD-L1 (green) and PD-1 (red) (B), and PD-L1 (green) and IFNγ (red) (C). Scale bar, 50 μm.
