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Imagine a battlefield where the enemy doesn't just hide from soldiers—it actively sabotages their weapons. In the tumor microenvironment, cancer cells have evolved a devious strategy: they transfer their own damaged mitochondria to immune T cells, effectively poisoning the very defenders meant to destroy them. This groundbreaking discovery, published in Nature in 2025, reveals a previously unknown mechanism of immune evasion that helps explain why many cancers resist even the most advanced immunotherapies. Understanding this cellular sabotage could unlock new strategies to restore immune function and improve cancer treatment outcomes. Introduction The tumor microenvironment is a complex ecos …