Representative blot (A) and relative levels (B) of 3‐nitrotyrosine determined by dot blot in whole protein extract from fetal aorta of control (open bars, n = 6) and IUGR (solid bars, n = 7) guinea pigs without (untreated) or with (NAC) maternal antioxidant supplementation. Values expressed as mean ± SEM, ***
P < 0.001 vs untreated‐control, #
P < 0.05 vs untreated‐IUGR, two‐way ANOVA, Newman–Keuls multiple comparison test.