Jun 28, 2017 | animal model, animal research, animals helping humans, Brain, Heroin, Heroin addiction, Medical Research, Methadone, Nalaxone, Narcan, Non-Human Primate, Non-Human Primate (NHP) Research, Opioid, Opioid Addiction, Opioid dependence, Opioid epidemic, public health, replacement therapy, Uncategorized, vaccine