| 摘要 |
The first embodiment of the present invention is a method for purifying an antibody or a substance derive from an antibody, wherein a carrier 1 having an affinity ligand with affinity for the antibody or the substance derived from the antibody and a carrier 2 having a cation exchange group are used to prepare an integrated column 1 connecting a column containing the carrier 1 and a column containing the carrier 2 or a column 2 having the mixture of the carrier 1 and carrier 2, the antibody or the substance derived from the antibody is applied to the column 1 or the column 2, and then the adsorbed antibody or substance derived from the antibody is eluted from the column 1 or the column 2. The second embodiment of the present invention is a method for using a carrier having a cation exchange group, wherein a solution containing an antibody or a substance derived from an antibody is applied to a carrier having a cation exchange group having a carboxyl group-containing ligand and pKa of 4.0 or more, and the antibody or the substance derived from the antibody is eluted by an acidic buffer having pH of 4.0 or less. |
