title: Clinical aspect of the studies of metabolic precursors of methylmalonic acid in vitamin B 12  deficiency.
mesh_terms: D000328:Adult; D000368:Aged; D000748:Anemia, Macrocytic / Q000175:diagnosis*; D000752:Anemia, Pernicious / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008314:Malonates / Q000378:metabolism* / Q000652:urine; D008715:Methionine / Q000008:administration & dosage; D008875:Middle Aged; D011506:Proteins / Q000008:administration & dosage; D014633:Valine / Q000008:administration & dosage; D014806:Vitamin B 12 Deficiency / Q000378:metabolism*
chemical_list: D008314:Malonates; D011506:Proteins; D008715:Methionine; D014633:Valine