Letter: Importation of etorphine.
D000818:Animals; D001315:Australia; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D007919:Leptospira / Q000302:isolation & purification*; D007922:Leptospirosis / Q000662:veterinary*; D008297:Male; D009395:Nephritis, Interstitial / Q000382:microbiology / Q000662:veterinary*