Y-90-Zevalin

Phase 2 Study of Zevalin Versus Zevalin and Motexafin Gadolinium in Patients With Rituximab-Refractory Low-grade or Follicular B-cell Non-Hodgkin's Lymphoma

Study of Zevalin Versus Observation in Participants at Least 60 Years Old With Newly Diagnosed Diffuse Large B-cell Lymphoma in Positron Emission Tomography (PET)-Negative Complete Remission After Rituximab-Cyclophosphamide, Doxorubicin, Vincristine, and Prednisone (R-CHOP) or R-CHOP-like Therapy