1. For ‘Axolotl’, see www.cis.vt.edu/ modernworld/d/axolotl.html
2. For much interesting information about amphibians see www.amphibiaweb.org
3. For information about regeneration in different systems see Nature Encyclopedia of Life Sciences at www.els.net
4. Plasticity and reprogramming of differentiated cells in amphibian regeneration;Brockes;Nat. Rev. Mol. Cell Biol.,2002
5. For Miller's work, see the article by Felice Frankel at www.americanscientist.org/template/IssueTOC/issue/406