Objectives: To purify immunoglobulin G (IgG) from swine serum and analyze the effects of DEAE-52 chromatog- raphy on the yield rate of IgG. Methods: Porcine IgG was separated and purified from swine serum by two-step methods, SDS- PAGE and Bradfold assaying kit with saturated ammonium sulphate (SAS) precipitation followed by DEAE-52 cellulose anion- exchanging chromatography. The effects of DEAE-52 chromatography on the yield rate of IgG were defermined by SDS-PAGE and Bradford assaying kit with double immu...