The fractionation of diphtheria toxoid by means of ammonium sulphate.
D064751:Ammonium Compounds; D000645:Ammonium Sulfate; D004168:Diphtheria Toxoid; D000644:Quaternary Ammonium Compounds; D013431:Sulfates
D064751:Ammonium Compounds; D004168:Diphtheria Toxoid; D000644:Quaternary Ammonium Compounds; D013431:Sulfates; D000645:Ammonium Sulfate
AMMONIUM COMPOUNDS; DIPHTHERIA TOXOID; SULFATES