1.2.1.49	-	
1.2.1.49	using acetone powder extract, ammonium sulfate fractionation, alumina C-gamma gel and column chromatography on Sephadex G-200	
1.2.1.49	using ammonium sulfate fractionation and chromatography on DEAE-Sephadex A-50 column, Blue-dextran affinity column and CM-Sephadex C-50 column	
1.2.1.49	using ammonium sulfate fractionation and chromatography on DEAE-Sephadex column, Blue-dextran affinity column and CM-Sephadex column	
1.2.1.49	using ammonium sulfate fractionation, column chromatography on DEAE-cellulose, phosphocellulose, Sephadex G-200, hydroxylapatite, and DEAE-cellulose	
1.2.1.49	using treatment with acetone, ammonium sulfate fractionation, and gel filtration on Sephadex G-25