Medical Definition of rituximab
: a genetically engineered monoclonal antibody that is administered by intravenous injection especially to treat non-Hodgkin lymphoma and chronic lymphocytic leukemia by binding to a receptor found on the surface of B cells and causing their lysis
Note: Rixtuximab is a chimeric monoclonal antibody prepared from humans and mice. It is marketed under the trademark Rituxan.
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