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Cytokine production in C. difficile infected piglets. The piglets were grouped according to the severity of the diseases: severe (black bar), mild (open bar), and uninfected control (slashed bar). The data show the mean cytokine concentrations by disease severity. The Kruskall Wallis test was used to determine significant differences between groups. IL-8 is significantly elevated in the severe disease group following C. difficile infection (*p<.05).
