This volume of Molecular Biology of Hematopoiesis is dedicated to John W. Adam son, M. D., Tadamitsu Kishimoto, M. D., Robert C. Gallo, M. D., Arthur W. Nienhuis, M. D., and Franco Mandelli, M. D., for their contributions in developing an overall view of the state-of-the-art knowledge in the field of hematopoiesis. Richard Champlin, among other renowned clinicians, presented updated information on stem cells and T-cell depletion for bone marrow transplant. A clinical update on thrombopoietin was presented by Pamela Hunt of Amgen and by Kenneth Kaushansky. Arthur Nienhuis' and Katherine...