MAP1B and nutritional disorder: 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).