Immunophenotypes of infused T cells. The phenotypes shown were determined using multicolor flow cytometry and are expressed in terms of percentage of the population of infused cells. (A) CD8⁺ versus CD4⁺ cells, (B) cells with a CD8⁺ effector T-cell phenotype (CD8⁺/CD62L⁻/CCR7⁻/CD45RA⁻/CD127⁻), (C) cells with CD8⁺ central memory (CD62L⁺/CCR7⁺/CD45RA⁻/CD127⁺) versus effector memory (CD62L⁻/CCR7⁻/CD45RA⁻/CD127⁺) T-cell phenotypes, (D) cells with CD4⁺ central memory versus effector memory T-cell phenotypes, and (E) cells with a regulatory T-cell (Treg) phenotype (CD4⁺/CD25⁺/FoxP3⁺) are shown.