P.D.: postnatal day, n: number of rats, Threo.: Threonine, MSG: monosodium glutamate Fluid intake rate: intake of each solution I total fluid intake, Adjusted mean +/- adjusted standard error (SE) by exposure and observation period *: P<0.05 significant difference between early and later childhood by tests of simple n1ain effect

Figure 4: Comparisons of adjusted mean rates (%) of amino acid solution intakes in males between TCDD and control groups (A), and between early (P.D. 22-28) and later (P.D. 29-35) childhood (B). Error bars show adjusted standard errors.