RET and neoplasm: To decipher the landscape of tumor cells, following the removal of 404 doublets, 30155 PTC cells were regrouped into five subclusters, including APOEhi‐PTC, TRIB3hi‐PTC, SLPIhi‐PTC, SH2D1Ahi‐PTC, and ITGA2hi‐PTC cells, defined by a unique subset of highly expressed genes in each subcluster (Figure2a; Table S2, Supporting Information).