The results of single-cell clustering visualization using t-distributed stochastic neighbor embedding (tSNE) of above-mentioned cancers revealed that the heterogeneity in the expression levels of CD8A in various cell clusters of GBM was found to be mild (Figure 8B), and the correlation analysis indicated that CD8A were positively correlated with malignant phenotypes of differentiation and angiogenesis. Here, CD8A is linked to glioblastoma.