Why bacteria are smarter than we think they are

By Megan De Ste Croix, University of Leicester

Just like humans bacteria can catch a virus, however, when you’re just a single cell catching a virus can be pretty fatal. Because of this, bacteria have developed some effective systems to protect themselves. These systems, known as restriction-modification (RM) systems, come in a variety of shapes and sizes but it has always been thought their primary function is a defensive one against invading viruses and other invading DNA.

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