Passive antibody transfer

"Passive antibody transfer" is **not a molecule or receptor**, but rather a process in which preformed antibodies are given to an individual to provide immediate, short-term immunity against specific pathogens or toxins. This can occur naturally—such as maternal IgG transferred to the fetus via the placenta—or artificially through administration of antibody-containing products like immune globulin or monoclonal antibodies[1][2][3]. The process does not stimulate the recipient's own immune system to produce memory cells; thus, protection is temporary and wanes within weeks to months. Passive antibody transfer is used for rapid prophylaxis in cases such as exposure to infectious diseases or for individuals with immunodeficiencies. Notable risks include hypersensitivity reactions and serum sickness when using animal-derived products[1]. Because it describes an **immunological intervention** rather than a discrete molecular entity, it should not be classified as a therapeutic target such as a receptor, enzyme, transporter, etc.[1][3]

Other names

Passive immunityAntibody transferAdoptive immunization

Direct neutralization of pathogens or toxins by transferred antibodies[1][3]