Biological

http://en.wikipedia.org/wiki/Biological_immortality

Tube
https://www.youtube.com/results?search_query=Biological+immortality

7 Organisms
http://morgana249.blogspot.in/2014/08/7-biologically-immortal-organisms-faces.html

Live
http://www.livescience.com/6967-hang-25-year-wait-immortality.html

Possible
http://www.thatsreallypossible.com/immortality/

Post
http://www.huffingtonpost.com/news/biological-immortality/

Slides
http://www.slideshare.net/search/slideshow?searchfrom=header&q=biological+immortality

Discussion
http://www.reddit.com/r/biology/comments/2asc9n/what_would_it_take_for_humans_to_become/

Regeneration
http://kabbalahstudent.com/science-confirms-regeneration/