title: Purification, antibody activity and ultrastructure of secretory and high-polymer IgA.
mesh_terms: D000818:Animals; D002850:Chromatography, Gel; D003126:Colostrum; D004586:Electrophoresis; D005260:Female; D006801:Humans; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D007074:Immunoglobulin G / Q000032:analysis / Q000302:isolation & purification*; D008722:Methods; D008854:Microscopy, Electron; D008961:Models, Structural; D014461:Ultracentrifugation
chemical_list: D007074:Immunoglobulin G