Xiao, Z., Xu, H., Ma, N., Lei, L., Cong, C., Sun, N., Wang, G., Chen, X., Ren, K., Qiao, H. (2026). A BCG hydrogel enables localized NOD2/STING activation to overcome resistance to immune checkpoint blockade. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2531588123