Changes

A myth throughout the ages that there is a Fountain of Youth whose restorative waters could provide a means to immortality.

A myth throughout the ages that there is a Fountain of Youth whose restorative waters could provide a means to immortality.

Some "immortalized cell lines", such as HeLa (for the person they came from, Henrietta Lacks, and her cervical cancer) are human cells that keep reproducing in the petri dish. Such cells are important in medical research.<ref>http://www.smithsonianmag.com/science-nature/henrietta-lacks-immortal-cells-6421299/</ref>

Some "immortalized cell lines", such as HeLa (for the person they came from, Henrietta Lacks, and her cervical cancer) are human cells that keep reproducing in the petri dish. Such cells are important in medical research.<ref>http://www.smithsonianmag.com/science-nature/henrietta-lacks-immortal-cells-6421299/</ref><ref>http://rebeccaskloot.com/the-immortal-life/</ref>

==Cultural immortality==

==Cultural immortality==