We’re used to thinking of the immune system as a separate entity, almost a distinct organ, but the truth is much more complicated. Breakthroughs in recent years—some resulting from research performed in Prof. Rotem Sorek’s lab at the Weizmann Institute of Science’s Molecular Genetics Department—have shown that individual bacterial cells possess their own autonomous, innate immune system that can identify, locate and deal with intruders.
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Source: Phys.org