Recombinant Anti-CD2 x Anti-TCR (Vβ8) Bispecific Antibody (scDiabody-CH3) is a fusion protein of two scDiabodies connected together by a CH3 region. In single-chain Diabodies, an additional connecting linker is introduced between chains of the anti-CD2/anti-TCR (Vβ8) diabody. The scDiabody with two specificities is fused to each of the CH3 chains to extend half-life. This BsAb can activate T cells. It is designed for the research of Tumors therapy.