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The ability of rat monoclonal antibodies to promote antibody-dependent cell-mediated cytotoxicity with human effector cells was tested by using a variety of antibodies against different human and mouse leukocyte antigens. It was found that only IgG2b antibodies were effective. This isotype has already been shown to be efficient in fixing human complement, which suggests that among rat monoclonal antibodies, the IgG2b subclass might be a good choice for attempts at serotherapy. Further studies with other antibody-mediated effector mechanisms as well as suitable clinical trials are merited.


Journal article


J Immunol

Publication Date





3056 - 3061


Animals, Antibodies, Monoclonal, Antibody Specificity, Antibody-Dependent Cell Cytotoxicity, Binding Sites, Antibody, Dose-Response Relationship, Immunologic, Hemagglutination Tests, Humans, Immunoglobulin Allotypes, Immunoglobulin G, Killer Cells, Natural, Lymphocytes, Rats