Subsequently, we performed cluster analysis on each tissue sample separately and found that tumor tissue can be classified into 17 different cell types (clusters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 and 17), as follows: Leydig cells 1, germ cells 1, germ cells 2, Sertoli cells, Leydig cells 2, Leydig cells 3, Leydig cells 4, endothelial cells, tumor cells 1, CD8+ T cells, NK cells, macrophages, Myoid cells 1, B cells, Myoid cells 2, DC cells and tumor cells 2, respectively (Figure 2D). Here, CD8A is linked to neoplasm.