The present invention includes a dual protein comprising a protein that specifically binds to a novel delta-like ligand 4 (Delta like ligand 4, DLL4) and an antibody that specifically binds to vascular endothelial cell growth factor (VEGF). It relates to the target protein.本発明は、新規なデルタ様リガンド4(Delta like ligand4,DLL4)に特異的に結合するタンパク質および血管内皮細胞増殖因子(Vascular endothelial cell growth factor,VEGF)に特異的に結合する抗体を含む二重標的タンパク質に関するものである。