CD4 and head and neck squamous cell carcinoma: We generated from this atlas a CD4+ T cell sub-atlas comprising scRNA-seq data for 119,960 CD4+ T cells from 64 treatment-naïve patients and 10 healthy donors, including colorectal cancer (CRC) (42), intrahepatic cholangiocarcinoma (CHOL) and hepatocellular carcinoma (HCC) (43), head and neck squamous cell carcinoma (HNSCC) (44), non-small cell lung cancer (NSCLC) (42), pancreatic ductal adenocarcinoma (PDAC) (45), renal cell carcinoma (RCC) (42, 46) and uterine corpus endometrial carcinoma (UCEC) (42) (Supplementary Figure S5A).