PTPRC and neoplasm: Therefore, we next performed MULTI‐seq on immune cells from mice with or without liver tumors, and generated 5′ scRNA‐seq and T cell receptor‐sequencing (TCR‐seq) libraries to study how liver metastases would impact the TME in detail (Figure S2A, Supporting Information).[30] Specifically, CD45+ total leukocytes were collected from SubQ, liver tumors, and tumor‐adjacent liver tissues.