EREG and neuroblastoma: The differences between control and NB, as well as within NB subtypes, were most significant in CD14+ CD16− monocytes, marked by expression of typical M1 (CXCL2) and M2 (CD163, TIMP1, and EREG) markers, however, lacked expression of key macrophage markers (Supplementary Fig. 5b–f, Supplementary Data 7).