Recombinant Anti-CD64 x Anti-GD2 Bispecific Antibody (Diabody) is designed to be expressed as two polypeptide chains respectively. The two chains are cross-over pairing to form a dimer. It contains a His-tag for affinity purification. This BsAb can retarget neutrophils cells to tumor cells. It is designed for the research of Neuroblastoma; Osteosarcoma; Melanoma; Solid tumors therapy.