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Effects of leucine on pancreatic amylase (a), trypsin (b), chymotrypsin (c), and lipase (d) mRNA levels in vitro. Values are the mean and pooled standard error of the mean (SEM). The enzyme mRNA levels were normalized to those of β-actin mRNA, and values of the mRNA levels were compared with those of the control group as 1.00. Different letters represent significantly different values (P < 0.05, n = 3).
