title: Nickel for ruminants. I. Influence of dietary nickel on ruminal urease activity.
mesh_terms: D000818:Animals; D001798:Blood Proteins / Q000032:analysis; D001806:Blood Urea Nitrogen; D004789:Enzyme Activation / Q000187:drug effects; D005260:Female; D009532:Nickel / Q000494:pharmacology*; D012417:Rumen / Q000201:enzymology*; D012756:Sheep / Q000378:metabolism*; D014510:Urease / Q000037:antagonists & inhibitors / Q000378:metabolism*
chemical_list: D001798:Blood Proteins; D009532:Nickel; D014510:Urease