3.4.21.41 - 717603, 81395, 81403 3.4.21.41 commercial preparation 718116 3.4.21.41 from human plasma 717805 3.4.21.41 from inclusion bodies, ion exchange chromatography (Q-Sepharose), gel filtration 717786 3.4.21.41 maltose affinity column chromatography 753377 3.4.21.41 nickel-Sepharose affinity column chromatography and Superdex 200 gel filtration 755267 3.4.21.41 proenzyme C1r 81398 3.4.21.41 recombinant active catalytic region of C1r from Escherichia coli strain BL21(DE3) by ion exchange chromatography and gel filtration 683889 3.4.21.41 solubilization of inclusion-bodies 717587