PD-1 signaling and PD-1 blockade-mediated tumor control are established at microvillar T cell contacts. - Jenkins E; Fellermeyer M; Heraghty DF; Sharma S; Mitra T; Kotowski M; Clarke J; Lui Y; Daly S; Marin Z; Banik D; Körbel M; et al. (Science immunology, 2026)