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Change in body weight of male (A) and female (B) phenylketonuria (PKU) and wild-type (WT) mice fed casein (CAS), amino acid (AA), or glycomacropeptide (GMP) diets from weaning (3 wk) through 23 wk of age. Repeated-measures analysis indicated significant genotype × diet interaction for both male and female mice. Values are means ± SE; n = sample sizes (in parentheses). a,b,cMeans with different superscripted letters are significantly different (P < 0.05), as shown in the legend.
