Fig. 2From: Increased PD-1-positive macrophages in the tissue of gastric cancer are closely associated with poor prognosis in gastric cancer patientsPresence of PD-1+ macrophages in gastric cancer tissue by immunofluorescence staining. Representative images of immunofluorescence staining of gastric cancer tissue for a PD-1, b CD68, c DAPI, and d merged stainingBack to article page