Development and Validation of an Analytical Method for 2-Thiouracil, 4-Thiouracil, and 6-Methyl-2-thiouracil in Bovine Urine: A Method for Monitoring Inspections in Beef Exports to the European Union

• Hiroko HataJapan Food Research Laboratories
• Chikako IkegawaJapan Food Research Laboratories
• Seiichiro IizukaJapan Food Research Laboratories
• Youichi KounoJapan Food Research Laboratories
• Rie ItoHoshi University
• Tomoaki TsutsumiNational Institute of Health Sciences
• Hiroshi AkiyamaHoshi University
• Shizuka Saito-ShidaNational Institute of Health Sciences