Cathepsin L-dependent positive selection shapes clonal composition and functional fitness of CD4+ T cells. - Petrozziello E; Sayed A; Freitas JA; Federle C; Nedjic J; Ravens S; Akçabozan B; Schulz AM; Zehn D; Schmidt-Supprian M; Obst R; Prinz I; et al. (Nature immunology, 2025)