dna polymerase alpha 2-primase has been purified 2750 fold from developing cherry salmon ( oncorhynchus masou ) testes by the following purification steps : fractional extraction , phosphocellulose ( 1st ) , ammonium sulfate fractionation , deae-cellulose , phosphocellulose ( 2nd ) , hydroxylapatite and single-stranded dna-cellulose column chromatographies .
C0011050
deae-cellulose
C0007648
cellulose