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Human lung CD8+ tissue-resident memory T cell-derived interferon-γ orchestrates subset-specific antiviral programming in airway epithelial cells
Mattingly et al. use human lung cells to show that virus-specific CD8+ tissue-resident memory T cells trigger epithelial antiviral defenses via IFNγ. This early protective response varies by epithelial subset, restricts influenza infection, and highlights the importance of Trm-epithelial cell crosstalk in mediating respiratory virus control.