Cysteine's sulfur splits pathways for growth: it fuels GSH and Fe-S clusters, enhancing CD8⁺ T cell proliferation and anti-tumor immunity—metabolic choice matters! PMID:42276031, Cell 2026, @Cell https://www.cell.com/cell/fulltext/S0092-8674(26)00570-2 #Medsky #Pharmsky #RNA #ASHG #ESHG 🧪
