Aggression 1 Animals 1 Anxiety 1 Anxiety Disorders 1 Article 1 Body Weight 1 Female 1 Heroin Dependence 1 Male 1 Male offspring 1 Maze Learning 1 Motor Activity 1 Paternal Exposure Paternal Inheritance 1 Paternal heroin addiction 1 Rats 1 Rats, Sprague-Dawley 1 Sprague Dawley rat 1 Transgenerational effects 1 adverse effects 1 aggression 1 animal 1 animal experiment 1 animal model 1 anxiety 1 anxiety disorder 1 body weight 1 concentration response 1 controlled study 1 diamorphine 1