title: Serum vitamin B12 and B12-binding protein levels associated with oral contraceptives.
mesh_terms: D000747:Anemia, Hypochromic / Q000097:blood; D001798:Blood Proteins / Q000032:analysis*; D002352:Carrier Proteins / Q000097:blood*; D003276:Contraceptives, Oral / Q000494:pharmacology*; D005260:Female; D006801:Humans; D007958:Leukocyte Count; D014155:Transcobalamins / Q000032:analysis; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D001798:Blood Proteins; D002352:Carrier Proteins; D003276:Contraceptives, Oral; D014155:Transcobalamins; D014805:Vitamin B 12