Interactions between NAD+ metabolism and immune cell infiltration in ulcerative colitis: subtype identification and development of novel diagnostic models - Tian, Linglin; Gao, Huiyang; Yao, Tian; Chen, Yuhao; Gao, Linna; Han, Jingxiang; Zhu, Lanqi; Huang, He (Frontiers in Immunology, 2025)