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Showing 1 to 1 of 1 for “"bacteriophage immunity"”.
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Rarely Acquired Type II-A CRISPR-Cas Spacers Mediate Anti-Viral Immunity Through the Targeting of a Non-Canonical PAM Sequence
<p>Viruses that infect prokaryotes, called bacteriophages or phages, are thought to outnumber bacteria by a ratio of 10:1 and provide a constant threat to their hosts. In response, bacteria have evolved numerous defense mechanisms, attacking all major steps of the phage infection and replication …