TEK and neoplasm: We found that B16F10 cells express substantially higher mRNA levels of the TIE2 ligand Angiopoietin‐2 (Ang2) compared to LLC1 and 4T1 tumor cells, whereas Ang1, Platelet‐Derived Growth Factor Alpha (PDGFA), and Fibroblast Growth Factor2 (FGF2) are similarly expressed (Fig EV1C).