Effects of perinatal diazinon exposure on 5HT2 receptor binding: (A) 0.5 mg/kg/day, (B) 1 mg/kg/day. Data represent means and standard errors, presented as the percent change from control values; complete original data are shown in Supplement Table S6. Multivariate ANOVA for each treatment appears at the top of the panels. Lower-order tests were carried only where justified by interactions of treatment with other variables. Panel (C) shows the simple main treatment effects, collapsed across age and region. Abbreviations: f/p, frontal/parietal cortex; t/o, temporal/occipital cortex; mb, midbrain; bs, brainstem.