Tfh-cell-derived interleukin 21 sustains effector CD8+ T cell responses during chronic viral infection
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CD4+ T cell-derived interleukin 21 (IL-21) sustains CD8+ T cell responses during chronic viral infection, but the helper subset that confers this protection remains unclear. Here, we applied scRNA and ATAC-seq approaches to determine the heterogeneity of IL-21... ...
