In response to short DNA fragments, lymphocytes release mitochondrial DNA that helps trigger an immune response.

A new study is rewriting 50 years of biological dogma by suggesting that mature blood cells develop much more rapidly from stem cells than previously thought.

Australian researcher Donald Metcalf, whose discoveries transformed cancer treatment, has passed away at age 85.

Supercentenarian Hendrikje van Andel-Schipper appeared on CNN in 2009, before donating her body to science and yielding insights into her remarkable longevity.

The body of a supercentenarian expands science’s appreciation for the physiological limits of aging.