Preface: Just, U.; Introduction: Stem Cell Research within the Priority Program 1109 of the German Research Foundation, 2001-2007: Wobus, A.M. et al.; The Origins of Human Embryonic Stem Cells: A Biological Conundrum: Brink, T.C. et al.; A Protein Roadmap to Pluripotency and Faithful Reprogramming: Wang, J. et al.; Linkage of Pluripotent Stem Cell- Associated Transcripts to Regulatory Gene Networks: Tarasov, K.V. et al.; Stochastic Processes during Mouse Blastocyst Patterning: Dietrich, J.E. et al.; FGF2 Signaling in Mouse Embryonic Fibroblasts Is Crucial for Self-Renewal of Embryonic Stem Cells: Diecke, S. et al.; Connexin 40 Promoter-Based Enrichment of Embryonic Stem Cell-Derived Cardiovascular Progenitor Cells: David, R. et al.; Cell Therapy for Diabetes Mellitus: An Opportunity for Stem Cells?: Soria, B. et al.; Immunological Barriers to Embryonic Stem Cell-Derived Therapies: Sari?, T. et al.; Notch Signaling in Embryonic and Adult Myelopoiesis: Schwanbeck, R. et al.; The Transcription Factor Repertoire of Flt3+ Hematopoietic Stem Cells: Hieronymus, T. et al.; Cell Polarity and Asymmetric Cell Division within Human Hematopoietic Stem and Progenitor Cells: Giebel, B. et al.; New Insights into the Cell Biology of Hematopoietic Progenitors by Studying Prominin-1 (CD133): Bauer, N. et al.; Exploring Hematopoiesis at Single Cell Resolution: Rieger, M.A. et al.; The Case for a Metabolic Stem Cell Niche: Cross, M. et al.; Adhesion of Human Hematopoietic Progenitor Cells to Mesenchymal Stromal Cells Involves CD44: Wagner, W. et al.; Tenascin C in Stem Cell Niches: Redundant, Permissive or Instructive?: von Holst, A. et al.; The Role of Bone Marrow-Derived Cells in Fibrosis: Lin, W.-R. et al.; Partial Induction of the Myogenic Program in Noncommitted Adult Stem Cells: Belema Bedada, F. et al.; Stem Cell Differentiation: Cardiac Repair: Rubart, M. et al.; Characterization of Adult Neural Stem Cells and Their Relation to Brain Tumors: Jackson, E.L. et al.; Abnormal Localization and Accumulation of FLT3-ITD, a Mutant Receptor Tyrosine Kinase Involved in Leukemogenesis: Koch, S. et al.; Mathematical Modeling of Genesis and Treatment of Chronic Myeloid Leukemia: Horn, M. et al.; Author Index; Subject Index; Conference Calendar.