Figure 5. Arp2 expression in gastric cancer. (A) Arp2 expression levels in normal and cancerous gastric tissues. Extremely weak positive signals were detected in normal gastric mucosa (a). Moderate Arp2 staining intensity was observed in cancers with high differentiation (c), while substantially stronger signals were detected in moderately and poorly differentiated gastric cancers (e and g). (a, c, e, and g) 200×; (b, d, f, and h) 400×. (B) Arp2 expression levels in primary cancer tissues and corresponding metastatic lymph nodes. The average intensity of Arp2 was detected in a cancerous case with moderate differentiation (a), and an extremely strong signal was observed in the lymph node (c). (a and c) 200×; (b and d) 400×. (C) Kaplan–Meier curve for the correlation between Arp2 expression and overall survival.