title: Purification of three porcine immunoglobulin classes from the same biological source.
abstract: Porcine IgG, IgA and IgM were isolated from sow milk. They were systematically purified by a combination of gel filtration and ion exchange chromatography. The yields were 85%, 64% and 32%, respectively. These immunoglobulins were very pure, as checked by SDS-PAGE and Ouchterlony immunodiffusion. SDS-PAGE showed moreover the evidence of secretory component S in the IgA molecule and of joining piece J both in IgA and IgM molecules. The procedure can be used to purify immunoglobulin classes from other biological sources.
mesh_terms: D000818:Animals; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D004591:Electrophoresis, Polyacrylamide Gel; D005779:Immunodiffusion; D007070:Immunoglobulin A / Q000302:isolation & purification*; D007074:Immunoglobulin G / Q000302:isolation & purification*; D007075:Immunoglobulin M / Q000302:isolation & purification*; D008892:Milk / Q000276:immunology*; D013552:Swine / Q000276:immunology*
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M