Recombinant Anti-CD64 x Anti-GD2 Bispecific Antibody (IgG(L)-scFv) is formed by an IgG and two scFv moieties. The scFv fragments from an anti-CD64 antibody are fused to the C terminus of an anti-GD2 IgG light (L) chains, or vice versa. It is a type of appended IgGs, which is bispecific and tetravalent (2+2 antigen-binding valency). This BsAb can retarget neutrophils cells to tumor cells. It is designed for the research of Neuroblastoma; Osteosarcoma; Melanoma; Solid tumors therapy.