Iodine 131 Tositumomab. Definition

Medical Definition: Iodine 131 Tositumomab

Monoclonal antibody (tositumomab) that has been chemically altered by the addition of radioactive iodine. Used to treat certain types of NHL. A type of monoclonal antibody radioconjugate. The administration of iodine-131 tositumomab and tositumomab together is called the Bexxar regimen. Also called Bexxar, tositumomab regimen followed by regular iodine I 131 tositumomab and tositumomab.

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