Evolution on the inside track: How viruses in gut bacteria change over time

The digestive tract is home to a vast colony of bacteria, as well as the myriad viruses that prey upon them. Because the bacteria species vary from person to person, so does this viral population, the virome. By closely analyzing the virome of one individual over two-and-a-half years, researchers have uncovered new insights on the virome can change and evolve — and why the virome of one person can vary so greatly from that of another.

Fuente : http://www.eurekalert.org/pub_releases/2013-07/uop…