CD8A and chronic myelogenous leukemia, BCR-ABL1 positive: Individuals with CML showed a steep reduction in the expression of CD107a CD3+CD8+TCRγδ+ cells after vaccination (2.2-fold; p = 0.0368) (Figure 6A, right graph) and nearly undetectable levels in CD3+CD8-TCRγδ+ cells (Figure 6B, left graph).