Testing pregnant people's blood to look at free-floating DNA can tell doctors about the health of the fetus. But these tests sometime turn up DNA... A new kind of blood test can screen for many ...

Two bacteria are sitting near free-floating DNA. Suddenly, one bacterium shoots out a long appendage, latches onto a DNA fragment and reels in its catch. It happens fast, but it’s clear: this organism ...

Blood plasma can harbor DNA changes that could flag cancer years before existing diagnostic tests, an early study hints. The recent study, published May 22 in the journal Cancer Discovery, found ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Bacteria like to have sex just like anyone ...

Free-floating DNA carrying cancerous mutations was detected in blood three years before any other signs of cancer appeared. If approved as a test, doctors might detect cancers sooner and treat them ...