University of Geneva Apr 29 2026 Cytotoxic T lymphocytes are the body's specialized "killer" cells, precisely eliminating infected or cancerous cells. Their action relies on a specialized exchange zone called the "immune synapse," where they release active molecules to destroy the target cell without damaging neighboring ones. Until now, the fine organization of these structures remained difficult to observe. A study conducted by the University of Geneva (UNIGE) and the Lausanne University