Despite the severity of the maternal insult, the magnitude of the expression changes was generally modest and the greatest expression changes were for sex-determining region Y-box 4 (SOX4; 2.34-fold up-regulation with iron deficiency; P<0.04) and microtubule-associated protein 1B (Map1b; 2.21-fold up-regulation with iron deficiency; P<0.02). This evidence concerns the gene PLXNA3 and nutritional disorder.