Fig. 5From: 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 normal gastric mucosa and gastric cancer tissue by immunohistochemistry. Representative image of PD-1+ macrophages (arrows) in gastric cancer tissue following double staining immunohistochemistry (pink, PD-1; brown, CD68). a PD-1, b CD68, c merge of PD-1 and CD68, d normal gastric mucosa, e gastric cancer tissue - PD-1+ macrophageHigh, (f) gastric cancer tissue - PD-1+ macrophageLow. Magnification 200×Back to article page