F8 and cancer: IL1B mRNA levels were not correlated with mRNA levels of the neutrophil marker ELANE, the mast cell marker KIT, the fibroblast marker ACTA2, and the endothelial marker F8, were significantly associated with mRNA levels of KRAS per se, of the pan-lymphocyte marker CD3D, and the cancer cell marker KRT18, but showed the tightest correlation (coefficient = 0.4; p < 10−300) with mRNA levels of the macrophage marker ADGRE1 (Figures S2 and S3).