title: Observations on the origin of pregnancy-associated plasma proteins.
mesh_terms: D000328:Adult; D000626:Aminopeptidases / Q000097:blood*; D005260:Female; D006454:Hemoglobins / Q000378:metabolism; D006801:Humans; D008297:Male; D010744:Phosphoric Monoester Hydrolases / Q000097:blood*; D011247:Pregnancy; D012712:Serum Globulins
chemical_list: D006454:Hemoglobins; D012712:Serum Globulins; D010744:Phosphoric Monoester Hydrolases; D000626:Aminopeptidases