CD8A and acute lymphoblastic leukemia: The frequencies to Tax LLF (33.06% and 9.62%), GPP FMQ (8.55 and 6.56%), and Tax SFH (3.3% and 1.45%) were the highest among expanded cells from both donors, whereas CD8+ T cells showed a relatively low frequency to GPP ALL (0.34% and 0.0%) and GPP SLI (0.44 and 0.01%).