Fig. 4.

Reduced hindlimb uptake of essential and nonessential amino acids in the intrauterine growth restriction (IUGR) fetus. A: total amino acid (AA) uptake rates. B: individual AA uptake rates. Data are represented as means ± SE; IUGR (n = 8) and control (CON; n = 8). Arg, arginine; Asp, aspartate; ASPG, asparagine; Cys, cysteine; Glu, glutamate; His; Lys, lysine; Met, methionine; Orn, ornithine; Phe, phenylalanine; Pro, proline; Ser, serine; Tau, taurine; Thr, threonine; Trp, tryptophan; Tyr, tyrosine. *Statistical significance at P ≤ 0.05 vs. CON, Student’s t test. C: linear relationship between hindlimb weight and alanine (Ala), glutamine (Gln), glycine (Gly), leucine (Leu), isoleucine (Ile), and valine (Val) uptake rates. IUGR fetuses and CON fetuses with R² and P values are shown.