Functional differences between PD-1+ and PD-1- CD4+ effector T cells in healthy donors and patients with glioblastoma multiforme. Goods BA, Hernandez AL, Lowther DE, et al. Functional differences between PD-1+ and PD-1- CD4+ effector T cells in healthy donors and patients with glioblastoma multiforme. PLoS One. 2017;12(9):e0181538. doi:10.1371/journal.pone.0181538 Read more