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Pass the swill
Live eggs (bottom) from the parasitic pig whipworm, Trichuris suis, can quell inflammation in people with ulcerative colitis. In a 12-week University of Iowa study, more of the patients given such eggs reported improvement than those given a placebo (pie charts). Credit: Photo: Detlev Goj, Ovamed GMBH Germany; Graph: T. Dubé

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