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  "path": "/news/2026-04-metabolic-tattoo-scientists-mechanism-cell.html",
  "publishedAt": "2026-04-20T16:40:03.000Z",
  "site": "https://medicalxpress.com",
  "textContent": "While modern life includes many conveniences, humans are still incessantly exposed to a variety of metabolic stresses we have never experienced before. Our immune systems are constantly trying to protect us, and CD8⁺ T cells in particular—also known as killer T cells—play an essential role in attacking tumors.",
  "title": "How to remove a metabolic tattoo: Scientists find protective mechanism in T cell purine pathways"
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