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  "path": "/releases/2026/03/260304184235.htm",
  "publishedAt": "2026-03-05T22:19:10.000Z",
  "site": "https://www.sciencedaily.com",
  "textContent": "Scientists have uncovered new genetic rules that determine whether the immune system’s “killer” T cells remain powerful long-term defenders or become worn out and ineffective. By building a detailed genetic atlas of CD8 T cell states, researchers identified key molecular switches that push these cells toward either resilience or exhaustion. Remarkably, disabling just two previously unknown genes restored the tumor-killing power of exhausted T cells while preserving their ability to provide lasting immune protection.",
  "title": "Scientists discover the switch that revives exhausted cancer-fighting T cells"
}