1. Embryonic stem cell lines derived from human blastocysts;Thomson;Science,1998
2. The business of human embryonic stem cell research and an international analysis of relevant laws;De Trizio;J Biolaw Bus,2004
3. International Society for Stem Cell Research. Stem cell policies by country. Available at: http://www.isscr.org/public/regions/index.cfm. Accessed April 11, 2008.
4. The President's Council on Bioethics. Alternative Sources of Pluripotent Stem Cells. Available at: http://www.bioethics.gov/reports/white_paper/alternative_sources_white_paper.pdf. 2005 May.
5. Viable offspring derived from fetal and adult mammalian cells;Wilmut;Nature,1997