Viruses cannot only cause illnesses in humans, they also infect bacteria. Those protect themselves with a kind of "immune system" which -- simply put -- consists of specific sequences in the genetic material of the bacteria and a suitable enzyme. Scientists have now shown that the dual-RNA guided enzyme Cas9 which is involved in the process has developed independently in various strains of bacteria.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/d...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/d...