3.4.21.47	-	753422, 753663	
3.4.21.47	affinity purification of factor B	36599	
3.4.21.47	by ion-exchange chromatography	699342	
3.4.21.47	C3bB(Ni2+) complex or C3bBb(factor B-D279G mutant) purified by gel filtration	701017	
3.4.21.47	complement proteins purified by gel filtration, to homogeneity	698871	
3.4.21.47	magnetic cobalt beads chromatography and analytical ultracentrifugation	710039