Centro Nacional de Investigaciones Cardiovasculares Carlos III (F.S.P.) Apr 15 2026 Researchers at the Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC) show that active mitochondria maintain dendritic cells, the immune system's sentinels, in a "ready-to-respond" state, linking cellular metabolism to gene regulation and T-cell activation. The findings, published in Cell Metabolism , open new avenues to improve vaccines and cancer immunotherapy . The study was led by David