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Mean (± SEM) saccharin consumption (ml) by adolescents during acquisition (A) and mean (± SEM) percent saccharin consumed on the two-bottle test (B). *denotes a significant difference between Group 0 and all drug treated-groups. +denotes a significant difference between Group 0 and Groups 1.8 and 3.2. Ωdenotes a significant difference between Groups 1.0 and 1.8.
