Deranged B 12 metabolism: effects on sulfur amino acid metabolism.

Adenosine Triphosphate Adult Amino Acid Metabolism, Inborn Errors/enzymology,metabolism Amino Acids/analysis Betaine Brain Chemistry Carbon Isotopes Child, Preschool Folic Acid Homocysteine Humans Infant Infant, Newborn Isomerases/analysis Kidney/enzymology Liver/analysis,enzymology Male Malonates/urine Methionine Methyltransferases/analysis Transferases/analysis Vitamin B 12/metabolism

Amino Acids Carbon Isotopes Malonates Homocysteine Betaine Adenosine Triphosphate Folic Acid Methionine Transferases Methyltransferases Isomerases Vitamin B 12