MRC1 and nasopharyngeal carcinoma: The p-ATR and CD68+/CD206+ levels were observed as 95.5% (21/22) and 81.8% (18/22) in the EBV-positive NPC biopsies, respectively, while only 33.3% and 50.0% in the EBV-negative NPC, respectively (Table 1, *p < 0.05).