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Duodenal morphology in pigs at weaning with different body weights (A) and at 20 kg with different weaning weights (< 7.5 or > 9.0 kg) and mycotoxin challenges (B). (−), no supplemental mycotoxins; (+), supplemental 2 mg/kg of deoxynivalenol and 0.18 mg/kg of aflatoxins; VH, villus height; CD, crypt depth. Ki-67 is an estimate of the proliferative rate, calculated based on the proportion of nuclei positive to Ki-67 staining to the total nucleus number
