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Mean plasma corticosterone (CORT; +/− SEM) for sham surgery (Sham) or vomeronasal organ removed (VNX) rats that were also treated with ZnSO4 (ZN) and exposed to strawberry (STR) or ferret (FER) odor for 30 min in their home cages. Asterisks indicate a significant difference from Sham/ZN/FER group (p < 0.05).
