The tolomerrase theory is a continuation of support to the Hayflick limit (or Hayflick Phenomena) theory involved in telomeres and telomerase. Telomeres are the structure at the end of the chromosome. As each time the cell divides, its telomeres is shortened, at certain length, the cell stops division and goes into senescence.
The experiment shows, the cell senescence can be reversed by controlling the genes of telomerase autocatalytic nature, which in turn, promotes the forever cell division capacity