CD8A and neoplasm: At perivascular cuffs and choroid plexus, CD8+ cells were most pronounced in the mAb9.2.27 monotherapy and NK+mAb9.2.27 treated tumors compared to the control (One-Way ANOVA F11.0, df=3, p=0.0011, n=5) and NK cell monotherapy tumors (One-Way ANOVA F11.0, p=0.0001, n=5), where the CD8+ cells were restricted to the tumor/brain periphery (Fig. 2B and 2C).