title: Quantitative spectrodensitometry on morphine and amphetamine on thin layer chromatograms.
mesh_terms: D000661:Amphetamine / Q000032:analysis*; D002855:Chromatography, Thin Layer; D003720:Densitometry; D005782:Gels; D006801:Humans; D008722:Methods; D009020:Morphine / Q000032:analysis* / Q000652:urine; D012822:Silicon Dioxide; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D013057:Spectrum Analysis
chemical_list: D005782:Gels; D012822:Silicon Dioxide; D009020:Morphine; D000661:Amphetamine