title: Purification of the "pregnancy zone" protein.
mesh_terms: D001798:Blood Proteins / Q000302:isolation & purification*; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D006242:Haptoglobins; D006801:Humans; D008722:Methods; D008970:Molecular Weight; D011247:Pregnancy; D013053:Spectrophotometry; D014461:Ultracentrifugation
chemical_list: D001798:Blood Proteins; D006242:Haptoglobins