a strong trendP = 0.0889
Post hoc Mann-Whitney tests showed a strong trend towards a significant reduction in latency to immobility for stressed nontreated animals compared with control mice ( U = 60.50; P = 0.0889); there was no significant difference between stressed and control mice that received imipramine ( U = 76.50; P = 0.2213; Figure 2(b) ).