tonin was purified from rat submaxillary glands by differential centrifugation , ammonium sulphate precipitation , gel filtration on sephadex g150 , and by ion-exchange chromatography on deae-cellulose , phospho-cellulose , sp-sephadex c25 , and sp-sephadex c50 .
C0011050
deae-cellulose
C0007648
cellulose