Scientists find 10 new defense systems used by bacteria
In lab tests, the gene families appear to fight virus attacks
![phages](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/01/012518_LH_antiphage_main.jpg?fit=860%2C460&ssl=1)
VIRAL ATTACK Viruses called phages (shown landing on the surface of a cell in this transmission electron micrograph) can infect and kill bacteria. Scientists have just found a slew of new defense mechanisms that help bacteria resist such assaults.
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