A BCG hydrogel enables localized NOD2/STING activation to overcome resistance to immune checkpoint blockade - Ziyuan Xiao; Huizhen Xu; Ningyi Ma; Lei Lei; Chunyu Cong; Ningyi Sun; Guodong Wang; Xingmei Chen; Ke Ren; Haishi Qiao (Proceedings of the National Academy of Sciences, 2026)