Link to the Show / Show Notes This summary covers the issue of September 21, 2006. Featured are articles on intracoronary injection of bone marrow cells in acute myocardial infarction, intracoronary bone marrow-derived progenitor cells in acute myocardial infarction, transcoronary transplantation of progenitor cells after myocardial infarction, eculizumab in paroxysmal nocturnal hemoglobinuria; review articles on acute vulvovaginitis and on cancer stem cells; a case report of a woman with painful nodules on the fingertips, shortness of breath, and fatigue; and Perspective articles on the politics and promise of stem-cell research, on China and stem-cell research, and on telomeres, telomerase, and human disease.