title: Extraction and thin layer chromatographic confirmation of urine residues from food packaging materials.
mesh_terms: D000481:Allantoin / Q000032:analysis; D000818:Animals; D002415:Cats; D002855:Chromatography, Thin Layer; D005506:Food Contamination / Q000032:analysis*; D006801:Humans; D007200:Indican / Q000032:analysis; D008722:Methods; D051379:Mice; D051381:Rats; D012997:Solvents; D014508:Urea / Q000032:analysis; D014556:Urine / Q000032:analysis*
chemical_list: D012997:Solvents; D000481:Allantoin; D014508:Urea; D007200:Indican