President’s Council on Bioethics (U.S.)2007-03-272007-03-272005-05President’s Council on Bioethics (U.S.) (2005). Alternative sources of human pluripotent stem cells. Retrieved November 7, 2006, from The President's Council on Bioethics web site: http://www.bioethics.gov/reports/white_paper/alternative_sources_white_paper.pdfhttps://hdl.handle.net/1805/751122 pages.Discusses the following questions for four sources of stem cells: (1.) "Is it ethically sound?", (2.) "Is is scientifically sound?", (3.) "Is it 'realistic'?".604288 bytesapplication/pdfen-USstem cellspluripotentStem cells.BookStem Cell Research. 18.5.4.