adverseeffects anabolicagents analysis animalmodels braintissuetransplantation casestudies chemicalindustry chemicals chromatography cocaine congresses drugabuse drugcontrol drugsofabuse drugtraffic ecstasy(drug) embryology fetaltissues fetaltissuetransplantation florida forensictoxicology hallucinogenicdrugs history lawandlegislation marijuana marijuanaabuse massspectrometry methods methylphenyltetrahydropyridine narcoticlaws narcotics parkinson'sdisease parkinsondisease pathophysiology physiologicaleffect physiopathology psychopharmacology raveculture substance-relateddisorders substanceabuse substantianigra syntheticdrugs therapy toxicology transplantation wl359 wm270 wm270c6591986