Because DNA is stable after a cell has passed through its last cell division.

Because DNA is stable after a cell has passed through its last cell division, the concentration of carbon 14 in DNA serves as a marker for the date when a cell was born and can be used to be cells in humans so far.

Carbon-14 carbon-14 levels were increased in patients compared to people up to 22 years born before the nuclear tests. DNA is synthesized by cardiac myocytes many years after birth, indicating that cells in the human heart not , in fact, in fact, into adulthood, said Buchholz. At age 50, remain 55 % of the cells cells from the time around birth and 45 % were produced later. .Researchers on melanoma or cancer cells injected in mice always developed G-CSF a double -fold increase in tumor burden, a measure size and the severity of tumors in comparison with those who have not received G-CSF.