Viruses can have immune systems: A pirate phage commandeers the immune system of bacteria

 "A study published today in the journal Nature reports that a viral predator of the cholera bacteria has stolen the functional immune system of bacteria and is using it against its bacterial host. The study provides the first evidence that this type of virus, the bacteriophage ("phage" for short), can acquire a wholly functional and adaptive immune system."

'via Blog this'

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