title: An improved electrode for the assay of urea in blood.
mesh_terms: D002021:Buffers; D004566:Electrodes; D006801:Humans; D008722:Methods; D011188:Potassium / Q000097:blood*; D000644:Quaternary Ammonium Compounds; D012964:Sodium / Q000097:blood; D014508:Urea / Q000097:blood*; D014510:Urease
chemical_list: D002021:Buffers; D000644:Quaternary Ammonium Compounds; D014508:Urea; D012964:Sodium; D014510:Urease; D011188:Potassium