title: A further example of an acquired B antigen.
mesh_terms: D000017:ABO Blood-Group System; D005260:Female; D006801:Humans; D007415:Intestinal Obstruction / Q000276:immunology*; D007519:Isoantigens / Q000032:analysis*; D008875:Middle Aged; D009362:Neoplasm Metastasis; D010051:Ovarian Neoplasms / Q000276:immunology; D010534:Peritoneal Neoplasms / Q000276:immunology
chemical_list: D000017:ABO Blood-Group System; D007519:Isoantigens