DNA

There’s no existing screen for three-fourths of the types of cancers that Galleri found, because Grail’s blood test employs a new technology that finds telltale bits of DNA shed by tumors into the bloodstream.

When these DNA repair genes malfunction, cancer cells can multiply and spread more rapidly.

Rossi maintained his debunked claims of mistaken identity - which have been disproved by DNA and matching tattoos - during his court appearance on Monday.

A recent study found that small evolutionary mutations in cGAS -- an enzyme in the innate immune system that detects DNA and triggers immune defenses -- could make these animals better at repairing age-related genetic damage.

“A lot of the DNA is still in place,” Silver said.