Neutralizing Antibody is a specialized class of antibodies, that bind specifically to bacterial toxins, pathogens (including viruses) and their products, thereby neutralizing them. During pathogen invasion, Neutralizing Antibodies bind to viral surface antigens, directly blocking viral attachment to host cells and thereby preventing cellular entry. Antibodies that bind to specific proteins and neutralize their biological activity are also termed Neutralizing Antibodies.

Neutralizing Antibodies functionally differ from non-neutralizing antibodies. During viral infection, most antibodies produced are non-neutralizing antibodies. These bind to antigens and signal T lymphocytes that the antigen is tagged, activating cell-mediated immune responses to facilitate viral clearance. In contrast, Neutralizing Antibodies bind to viruses and directly block further infection without requiring T lymphocyte activation. Due to these properties, Neutralizing Antibodies are critical in vaccine and therapeutic antibody development.

Multple technolohies are applicable for Neutralizing Antibody Production, including Hybridoma Technology, Phage Display Technology and Antibody Humanization. KMD Bioscience's Neutralizing Antibody Production Services exclusively accept viral samples.

Neutralizing Antibodies are typically evaluated for viral neutralization potency through Neutralization Assays. These assays involve co-incubating viruses and Neutralizing Antibodies under appropriate in vitro conditions to enable interaction. The resulting mixture is then introduced into susceptible hosts (including animals, embryonated eggs, or cell cultures) to test residual viral infectivity.