Chi, F., Zhang, Q., Shay, J. E. S., Han, S., Hoeve, J. T., Yuan, Y., Yang, Z., Shin, H., Block, S., Solanki, S., Shah, Y. M., Heiden, M. G. V., Agudo, J., Yilmaz, Ã. H. (2025). Dietary cysteine enhances intestinal stemness via CD8+ T cell-derived IL-22. Nature. https://doi.org/10.1038/s41586-025-09589-5