5.1.3.30	-	726795, 727226, 727657, 728603	
5.1.3.30	Ni-affinity chromatography	727229	
5.1.3.30	nickel-affinity chromatography	727652	
5.1.3.30	recombinant His-tagged enzyme from Escherichia coli by nickel affinity chromatography to homogeneity	746879	
5.1.3.30	recombinant His-tagged enzyme from Escherichia coli strain BL21(DE3) by nickel affinity chromatography and dialysis	748412	
5.1.3.30	recombinant His6-tagged enzyme from Escherichia coli strain BL21(DE3) by nickel affinity chromatography	748499