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Table 2 Behavioral observations from resident intruder test showing the mean for each group

From: Transgenerational effects of paternal heroin addiction on anxiety and aggression behavior in male offspring

Behavior Frequency
F0-C F0-H F1-C F1-H F2-C F2-H F3-C F3-H
Non-social activity
 Attention 30.62 24.83* 30.06 24.17* 30.50 24.17* 29.31 27.41
 Rear 0.62 5.75* 0.87 5.5* 1.57 5.71* 0.88 1.31
 Sniff 23.0 20.87 22.87 21 23.13 19.87 20.11 20.72
 Walk 22.50 22.25 22.87 21.62 22.37 21.87 23.3 22.92
 Body care 1.25 4.87* 1.37 5.1* 1.50 5.12* 2.31 6.22*
Social activities
 Approach 8.50 20.37* 7.5 21.62* 8.25 21.0* 9.22 15.51*
 Follow 1.87 1.62 2.37 1.28* 4.0 2.25* 2.35 3.42
 Walk away 2.50 10.12* 2.50 9.87* 2.62 0.62 3.16 4.26
 Social sniff 23.25 39.62* 23.0 40.50* 23.0 28.12 23.16 27.17*
 Genital sniff 8.62 9.87 8.75 10.50 7.37 10.62* 8.65 8.88
 Mount 0.63 1.37 0.63 1.50 0.75 0.87 0.71 0.91
Aggression
 Tail swish 0.75 3.75* 1.25 4.12* 1.25 3.87* 0.65 1.31
 Lateral threat 0.37 3.62* 0.63 3.63* 0.37 3.62* 0.39 0.61
 Bite 2.37 9.25* 2.37 9.50* 2.87 9.12* 2.73 5.28*
 Clinch/fight 1.25 7.5* 1.50 7.50* 1.62 2.50 1.45 3.32*
  1. Data are given as mean frequencies. Student’s t test: the asterisk means statistically significant difference compared to control rats (p < 0.05)