S100A1 and cancer: Certain representative DEGs for identified cancer cells were displayed in Supplementary Fig. 1E: EEC-I (SGCD, KIF26B, CXCL13, and CALCB); EEC-II (IGKC, YAP1, IGLC3, and IGHG4), USC (AL357507.1, MUC4, MMP7, and AL079338.1), and UCCC (ISG15, IGFBP5, S100A1, and PI3).