FLI1 and sarcoma: As for the tissue catalogue, the human Fli-1 gene has been found in brain, skin, myeloid, lymphoid, lung, abdominal, breast, reproductive system, kidney, urinary, sarcoma, fibroblast, endothelium, and miscellaneous tissues, etc. According to The Human Protein Atlas, human Fli-1 was highly expressed in HELs (human erythroleukemia cells), HUVECs (endothelial cells originating in umbilical veins), REHs (cancer cell lines originating in lymphoid), and TIMEs (endothelial cell lines originating in skin).