Aggressive behavior in Experiment II.

A) Number of untreated control mice (WT and ARloxP) and ARNesDel mice displaying aggression in the first resident intruder test and total duration of attack for each group. B) Number of mice displaying aggression in the second resident intruder test conducted 24 hours after the final injection with saline or pCPA.# indicates level of significance versus controls; # p * indicates level of significance versus the corresponding group of controls; * p a One mouse in the pCPA treated group died prior to the second test of aggression.Aggressive behavior in Experiment II.