α7 nicotinic receptor levels in 3 regions of hippocampus, as reflected by I125-α-bungarotoxin binding, for DBA/2 wildtype and α7 nicotinic receptor heterozygote mice, gestated on normal (1.1 mg/kg) and supplemented (5 mg/kg) choline diet. In all cases, there was no significant effect of sex, so the data are collapsed across sex. In all regions, regardless of choline level in the dam’s diet, wildtype mice had greater levels of α7 nicotinic receptors. Across choline levels, within a genotype, there were no significant differences in binding levels. Data are mean ± SEM, n=12 per group. **p<0.001, Fisher’s LSD.