Angiopoietin Receptors: Tie-1 & Tie-2 - Eph - Epidermal growth factor (HER2/neu, Her 3, Her 4) - Fibroblast growth factor (FGFR2) - Flk-1 Flt-1 Insulin - IGF-1 - MuSK - Platelet-derived growth factor - TRK (TrkA, TrkB, TrkC), VEGF Receptors: Flt-1 & KDR/Flk-1,