title: The politics of principles.
mesh_terms: D001675:Bioethics; D002460:Cell Line; D019976:Cloning, Organism / Q000331:legislation & jurisprudence*; D018380:Hematopoietic Stem Cell Transplantation / Q000331:legislation & jurisprudence*; D006801:Humans; D011640:Public Policy; D012106:Research / Q000331:legislation & jurisprudence; D014481:United States