B cells, CD4, CD4 T cells, CD8, CD8 T cells, CRC, CRC cells, CRC liver metastasis, Liver, MDSC, MDSC) characteristic gene, MRC1, MSS CRC, T cell population, TAM1, TAM2, TAMs, colorectal cancer, colorectal cancer liver metastasis, differentially expressed genes, liver, liver metastasis, mannose, mannose receptor, mannose receptor C-type 1, metastatic tumor, monocytes, myeloid, myeloid cells, myeloid-derived, myeloid-derived suppressor cell, patients, plasma cells, primary, primary tumor, primary tumors, scRNA, sigmoid carcinoma, single, synchronous liver metastasis, transcriptional regulatory networks, tumor, tumor associated macrophage