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Errors (nose pokes to the nontarget odor) at test (T) and retraining (R) for independent groups treated at 5 min, 1, 2, and 5 hr after acquisition, with saline or timolol; test and retraining took place in a single session, 48 hr after initial training. (*) Significantly different from saline control group; (●) significantly different from 5 min, (
) 1 hr; (♦) 5 hr timolol groups (P < 0.01). There were no other significant orthogonal comparisons.
