Testing madness.
D000375:Aging; D000818:Animals; D002417:Cattle; D003132:Commerce; D003365:Costs and Cost Analysis; D016643:Encephalopathy, Bovine Spongiform / Q000175:diagnosis*; D008460:Meat; D011933:Reagent Kits, Diagnostic / Q000191:economics; D014481:United States
D011933:Reagent Kits, Diagnostic