NR4A1 is elevated in several tumor-promoting immune cells within the tumor microenvironment. (A) Expression of NR4A1 in T cells from blood, normal parenchyma, adjacent normal junction, or HCC (GSE98638, six patients). (B) Violin plots showing NR4A1 expression in different immune cells from human peripheral blood (PB) or melanomas (T) (GEO: GSE121638, GSE158803, GSE121638). (C) Violin plots showing gene expression including NR4A family and lineage markers in human melanomas (GSE120575). FPKM, fragments per kilobase of transcript per million fragments mapped; M, monocyte.