2.7.2.7	-	486475, 642344, 642349, 704285	
2.7.2.7	ammonium sulfate precipitiation, heparin column chromatography, and Sephadex G25 gel filtration	706668	
2.7.2.7	HisTrap column chromatography	761102	
2.7.2.7	Ni-NTA resin column chromatography	756087	
2.7.2.7	nickel affinity column chromatography	703499	
2.7.2.7	partial	642348