30 junio 2015
While studying Yersinia pestis, the bacteria responsible for epidemics of plague such as the Black Death, scientists found a single small genetic change that fundamentally influenced the evolution of the deadly pathogen, and thus the course of human history. They demonstrated how the acquisition of a single gene caused the shift of Y. pestis from causing a primarily gastrointestinal infection to a more serious and often fatal respiratory disease and how later modifications lead to infections associated with the bubonic plague.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/w-4ILypDW1Q/150630121210.htm
