title: Determination of proteinous nitrogen in vaccines using ion selective electrode.
mesh_terms: D000641:Ammonia / Q000032:analysis; D004566:Electrodes; D008722:Methods; D009584:Nitrogen / Q000032:analysis; D011506:Proteins / Q000032:analysis*; D014612:Vaccines / Q000032:analysis*
chemical_list: D011506:Proteins; D014612:Vaccines; D000641:Ammonia; D009584:Nitrogen