title: Metabolic precursors of methylmalonic acid in vitamin B12 deficiency.
mesh_terms: D006801:Humans; D007532:Isoleucine / Q000494:pharmacology*; D008314:Malonates / Q000652:urine*; D011422:Propionates / Q000494:pharmacology*; D013268:Stimulation, Chemical; D014633:Valine / Q000494:pharmacology*; D014806:Vitamin B 12 Deficiency / Q000378:metabolism / Q000652:urine*
chemical_list: D008314:Malonates; D011422:Propionates; D007532:Isoleucine; D014633:Valine