Antibod ies , a major component of adaptive immunity, play a critical role in protective and pathogenic immune responses. In r ecent years, a wide range of antibodies is discovered as candidates of cancer therapeutic agents, including the reconstructive molecules, bispecific antibodies (BsAbs). About Bispecific Antibody Bispecific antibodies, as its name indicates, consists of two antigen-binding sites, which can simultaneously bind two separate and unique antigens (or different epitopes of the same antigen). This structure is typically designed to bind to two targets, one on a cancer cell and one on an immune cell, act ivating or redirecting immune effector cells with the goal of getting the immune cell to kill the cancer cell by antibody-dependent cell-mediated cytotoxicity (ADCC), antibody-dependent cellular phagocytosis (ADCP), complement-dependent cytotoxicity (CDC) and other cytotoxic mechanisms. U nique biological and pharmacological properties, ...