title: [Development of toxicological test methods: possibilities and limitations].
authors.forename: R
authors.initials: R
authors.lastname: Walker
authors.forename: R
authors.initials: R
authors.lastname: Kroes
mesh_terms: D000818:Animals; D015197:Carcinogenicity Tests / Q000379:methods; D002417:Cattle; D002478:Cells, Cultured / Q000187:drug effects; D006801:Humans; D007928:Lethal Dose 50; D008452:Maximum Allowable Concentration; D051379:Mice; D009152:Mutagenicity Tests / Q000379:methods; D051381:Rats; D012106:Research; D013997:Time Factors; D018675:Toxicity Tests / Q000379:methods