Single Biggest Cancer Dictionary in the World
What is iodine I 131 tositumomab?
Pronunciation: /ˈaɪəˌdaɪn aɪ wən ˈhənərd ənd thirty-one* tositumomab*/
iodine I 131 tositumomab
Definition
A monoclonal antibody directed against the CD20 protein expressed on the surface of B-lymphocytes and radiolabeled with the radioisotope iodine I 131 with potential antineoplastic activity. Iodine I 131 tositumomab binds to and selectively delivers cyctotoxic radiation to CD20-expressing B-lymphocytes, thereby minimizing systemic radiotoxicity.