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Intestinal tight junction proteins levels of NBW, CUG and NCUG piglets on 26 d. A The protein expression of Occludin, Claudin-1 and ZO-1 in the duodenum. (B) The protein expression of Occludin, Claudin-1 and ZO-1 in the jejunum. (C) The protein expression of Occludin, Claudin-1 and ZO-1 in the ileum. Dates are presented as means ± SEM (n = 3). NBW, normal birth weight. CUG, catch-up growth. NCUG, not catch-up growth. *P < 0.05; **P < 0.01
