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Fecal score and weight of challenged and unchallenged piglets. Data are shown as the mean ± SD. (A) Fecal scores of piglets infected with PEDV WMB or DMEM (negative control). (B) Weights of piglets infected with PEDV WMB or DMEM (negative control). The asterisk represents the comparison between PEDV WMB group and DMEM group, *p < 0.05 and **p < 0.01.
