Recombinant Anti-Kit x Anti-VCAM-1 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 hematopoietic stem cells to injured myocardium. It is designed for the research of Cardiovascular disease therapy.