• Jun 15, 2026 practical hematopoietic stem cell transplantation n graft-versus-tumor effects. Common agents include busulfan, cyclophosphamide, fludarabine, and melphalan. Graft Collection and Handling Sources of Stem Cells Bone Marrow: Collected via aspiration; lower GVHD risk. Peripheral Blood Stem Ce BY Hollis Rath