title: Nicotine may reinforce intravenous drug-taking behavior in drug users: a comment on Harvey et al. (2004).
authors.forename: Reuven
authors.initials: R
authors.lastname: Dar
authors.forename: Hanan
authors.initials: H
authors.lastname: Frenk
mesh_terms: D004357:Drug Synergism; D006801:Humans; D009538:Nicotine / Q000494:pharmacology*; D018722:Nicotinic Agonists / Q000494:pharmacology*; D012646:Self Administration; D015819:Substance Abuse, Intravenous / Q000523:psychology*
chemical_list: D018722:Nicotinic Agonists; D009538:Nicotine