Ampicillin and amino acid analysis.
D000596:Amino Acids / Q000652:urine*; D000667:Ampicillin / Q000652:urine*; D006801:Humans; D009555:Ninhydrin; D013053:Spectrophotometry / Q000379:methods
D000596:Amino Acids; D000667:Ampicillin; D009555:Ninhydrin