CD27 and nasopharyngeal carcinoma: Additionally, we performed multiplex IHC staining on NPC biopsies and confirmed the physical juxtapositions of CD70-expressing malignant cells (CD70+PanCK+) and CD27-expressing CXCL13+CD8+ T cells (CD8+CXCL13+CD27+; Supplementary Fig. 13g).