The following is a list of the resources that I used in my research of this species:
1. Calder D, Kirkendale L. Hydroids (Cnidaria, Hydrozoa) from shallow-water environments along the Caribbean coast of Panama. Caribbean Journal of Science [Internet]. 2005 [cited 2013 May 1]. Available from: ftp://142.103.43.3/a.tavakolie/Belize_Scientific_papers/Calder_etal2005_Panama.pdf
2. Carla E, Pagliara P, Piraino S, Boero F, Dini L. Morphological and ultrastructural analysis of Turritopsis nutricula during life cycle reversal. Tissue and Cell [Internet]. 2003 [cited 2013 May 1]. Available from: http://www.sciencedirect.com/science/article/pii/S0040816603000284
3. Clark J. Will the Hayflick limit keep us from living forever? How Stuff Works.com [Internet]. 2009. Available from: http://science.howstuffworks.com/life/genetic/hayflick-limit.htm
4. Harris J. Immortal Ethics. Annals of the New York Academy of Sciences. 2004;1019:527–534.
5. Hayflick L. The future of ageing. Nature [Internet]. 2000 [cited 2013 April 28];408(6809):267–269. Available from: http://www.nature.com/nature/journal/v408/n6809/abs/408267a0.html
6. Hayflick L. Cell Biology of Aging. Bioscience [Internet]. 1975 [cited 2013 April 28];25(10):629–637. Available from: http://www.jstor.org/stable/10.2307/1297030
7. Ma H, Yang Y. Turritopsis nutricula. Nature and Science [Internet]. 2010 [cited 2013 April 28];8(2):15–20. Available from: http://www.sciencepub.net/nature/ns0802/ns0802.pdf#page=24
8. Miglietta M, Piraino S, Kubota S, Schuchert P. Species in the genus Turritopsis (Cnidaria, Hydrozoa): a molecular evaluation. Journal of Zoological Systematics and Evolutionary Research [Internet]. 2007 February [cited 2013 March 26];45(1):11–19. Available from: http://doi.wiley.com/10.1111/j.1439-0469.2006.00379.x
9. Piraino S, Boero F, Aeschbach B, Schmid V. Reversing the life cycle: medusae transforming into polyps and cell transdifferentiation in Turritopsis nutricula (Cnidaria, Hydrozoa). Biological Bulletin [Internet]. 1996 [cited 2013 April 28];190(3):302–312. Available from: http://www.jstor.org/stable/10.2307/1543022
10. Shammas M a, Simmons CG, Corey DR, Shmookler Reis RJ. Telomerase inhibition by peptide nucleic acids reverses “immortality” of transformed human cells. Oncogene [Internet]. 1999 November 4;18(46):6191–200. Available from: http://www.ncbi.nlm.nih.gov/pubmed/10597217
11. Shay J, Wright W. Hayflick, his limit, and cellular ageing. Nature reviews Molecular cell biology [Internet]. 2000 October [cited 2013 April 28];1(1):72–6. Available from: http://www.ncbi.nlm.nih.gov/pubmed/11413492
12. Than K. “Immortal” Jellyfish Swarm World’s Oceans. National Geographic [Internet]. 2009;(June 2008). Available from: http://news.nationalgeographic.com/news/2009/01/090130-immortal-jellyfish-swarm.html
2. Carla E, Pagliara P, Piraino S, Boero F, Dini L. Morphological and ultrastructural analysis of Turritopsis nutricula during life cycle reversal. Tissue and Cell [Internet]. 2003 [cited 2013 May 1]. Available from: http://www.sciencedirect.com/science/article/pii/S0040816603000284
3. Clark J. Will the Hayflick limit keep us from living forever? How Stuff Works.com [Internet]. 2009. Available from: http://science.howstuffworks.com/life/genetic/hayflick-limit.htm
4. Harris J. Immortal Ethics. Annals of the New York Academy of Sciences. 2004;1019:527–534.
5. Hayflick L. The future of ageing. Nature [Internet]. 2000 [cited 2013 April 28];408(6809):267–269. Available from: http://www.nature.com/nature/journal/v408/n6809/abs/408267a0.html
6. Hayflick L. Cell Biology of Aging. Bioscience [Internet]. 1975 [cited 2013 April 28];25(10):629–637. Available from: http://www.jstor.org/stable/10.2307/1297030
7. Ma H, Yang Y. Turritopsis nutricula. Nature and Science [Internet]. 2010 [cited 2013 April 28];8(2):15–20. Available from: http://www.sciencepub.net/nature/ns0802/ns0802.pdf#page=24
8. Miglietta M, Piraino S, Kubota S, Schuchert P. Species in the genus Turritopsis (Cnidaria, Hydrozoa): a molecular evaluation. Journal of Zoological Systematics and Evolutionary Research [Internet]. 2007 February [cited 2013 March 26];45(1):11–19. Available from: http://doi.wiley.com/10.1111/j.1439-0469.2006.00379.x
9. Piraino S, Boero F, Aeschbach B, Schmid V. Reversing the life cycle: medusae transforming into polyps and cell transdifferentiation in Turritopsis nutricula (Cnidaria, Hydrozoa). Biological Bulletin [Internet]. 1996 [cited 2013 April 28];190(3):302–312. Available from: http://www.jstor.org/stable/10.2307/1543022
10. Shammas M a, Simmons CG, Corey DR, Shmookler Reis RJ. Telomerase inhibition by peptide nucleic acids reverses “immortality” of transformed human cells. Oncogene [Internet]. 1999 November 4;18(46):6191–200. Available from: http://www.ncbi.nlm.nih.gov/pubmed/10597217
11. Shay J, Wright W. Hayflick, his limit, and cellular ageing. Nature reviews Molecular cell biology [Internet]. 2000 October [cited 2013 April 28];1(1):72–6. Available from: http://www.ncbi.nlm.nih.gov/pubmed/11413492
12. Than K. “Immortal” Jellyfish Swarm World’s Oceans. National Geographic [Internet]. 2009;(June 2008). Available from: http://news.nationalgeographic.com/news/2009/01/090130-immortal-jellyfish-swarm.html