title: Failure of response to N 5 -methyltetrahydrofolate in combined folate and B 12  deficiency. Evidence in support of the "folate trap" hypothesis.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D001853:Bone Marrow / Q000187:drug effects; D001854:Bone Marrow Cells; D002446:Celiac Disease / Q000150:complications; D005260:Female; D005492:Folic Acid / Q000008:administration & dosage / Q000378:metabolism / Q000627:therapeutic use*; D005494:Folic Acid Deficiency / Q000188:drug therapy* / Q000209:etiology / Q000378:metabolism; D006801:Humans; D007275:Injections, Intravenous; D007413:Intestinal Mucosa / Q000187:drug effects; D014805:Vitamin B 12 / Q000627:therapeutic use; D014806:Vitamin B 12 Deficiency / Q000188:drug therapy* / Q000209:etiology
chemical_list: D005492:Folic Acid; D014805:Vitamin B 12