Fig. 1From: 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 flow cytometry. a Representative FACS data for PD-1 expression on macrophages obtained from non-cancerous gastric mucosa and gastric cancer tissue. b PD-1 expression is significantly higher on macrophages obtained from gastric cancer tissue than on those obtained from non-cancerous gastric mucosa (P = 0.0001)Back to article page