Purpose/Objectives: To review radioimmunotherapy approaches for low-grade non-Hodgkin lymphoma (NHL) with a focus on tositumomab and iodine-131 tositumomab (Bexxar®, Corixa Corporation, Seattle, WA, and GlaxoSmithKline, Philadelphia, PA). Nursing implications for Bexxar therapy are reviewed, including radiation safety, patient education, and the management of therapy-related toxicities.