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Human and porcine recombinant deoxyribonucleases I (DNases I) were expressed in COS-7 cells, and purified by a single-step procedure. Since affinities for concanavalin A (Con A) and wheatgerm agglutinin (WGA) were strong in these recombinant DNases I, purification using Con A–WGA mixture-agarose column was performed. By this method, the enzymes in culture medium could quickly be isolated to apparent...
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