title: Urea analysis with the ammonia electrode.
mesh_terms: D000641:Ammonia; D000818:Animals; D002415:Cats; D004566:Electrodes; D005399:Fishes; D008722:Methods; D000644:Quaternary Ammonium Compounds / Q000032:analysis; D011892:Rana catesbeiana; D012972:Sodium Hydroxide; D013997:Time Factors; D014508:Urea / Q000032:analysis* / Q000097:blood / Q000652:urine; D014510:Urease
chemical_list: D000644:Quaternary Ammonium Compounds; D012972:Sodium Hydroxide; D000641:Ammonia; D014508:Urea; D014510:Urease