<i>Il22</i>^−/− mice have reduced worm expulsion.

<p>Wild-type (black bars) and <i>Il22</i>^−/− (white bars) mice were infected with <i>N.brasiliensis</i> and worm burden in the small intestine was analysed at the time points indicated. Data are pooled from three independent experiments (<i>n</i> = 5–13 for each time point, and shown as mean of individual animals +SEM). *<i>p</i><0.05, **<i>p</i><0.01.