In 2003, the FDA approved the tositumomab/iodine (131I) tositumomab regimen (Bexxar), which is a combination of an iodine-131 labelled and an unlabelled anti-CD20 monoclonal antibody.
En 2003, a FDA aprobou o réxime tositumomab/iodo (131I) tositumomab (Bexxar), que é unha combinación dun iodo-131 etiquetado e un anticorpo monoclonal anti-CD20 non etiquetado.