CD34 and nasopharyngeal carcinoma: We classified cells into 15 clusters for SPOSCC patients after radiotherapy of NPC on the basis of the marker genes of each type of cells, thereby corresponding to T cells+NK cells (1), T cells (2), DC+B cells (3), monocyte+DC cells (4), B cells (5), epithelial cells (6), monocyte+neutrophils+B cells (7), neutrophils+T cells (8), epithelial cells+proliferating cells (9), neutrophils+epithelial cells+T cells (10), mucosal.aquamous.epithelial.cells (11), neutrophils (12), keratinocytes (13), endothelial cells+smooth muscle cells (14), pre B cells CD34- (15), respectively (Figure 3).