Recombinant Anti-CD38 x Anti-CD59 Bispecific Antibody (Tandem scFv-Fc) is designed to be expressed as a homodimer, which has 2+2 antigen-binding valency. This format consists of one Fc region and two tandem scFv fragments, in which the anti-CD38/CD59 tandem scFv is fused to the Fc domain. The engineered fragment format is used to extend the half-life. This BsAb can recruit complement to tumor cells. It is designed for the research of Multiple myeloma (MM); Hematologic malignancies therapy.