1. Wen, B., Wu, H., Shinkai, Y., Irizarry, R.A. & Feinberg, A.P. Nat. Genet. 41, 246–250 (2009).
2. Conley, B.J. et al. Curr. Protoc. Cell Biol. Chapter 23 (2005).
3. Roach, M.L. & McNeish, J.D. Methods Mol. Biol. 185, 1–16 (2002).
4. Stem Cells: Scientific Progress and Future Research Directions (US Department of Health and Human Services, Washington, DC, USA, 2001).
5. Kalmar, T. et al. PLoS Biol. 7, e1000149 (2009).