How cells distinguish between disease-causing and innocuous invaders

In a paper published in this week's early online issue of the journal Cell Host & Microbe, the researchers discovered that intestinal cells in the roundworm C. elegans, which are similar in structure to those in humans, internalize bacterial toxins that inactivate several host processes. This then triggers an immune response, which results in the body mounting an immediate attack against the disease-causing microbes.
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