1.7.1.2	-	
1.7.1.2	ammonium sulfate precipitation and blue-dextran-Sepharose column chromatography	
1.7.1.2	DEAE-Toyopearl 650M column chromatography, Sephacryl S-200 gel filtration and DEAE-cellulose DE-52 column chromatography	
1.7.1.2	partial