title: Methyl biogenesis.
mesh_terms: D005492:Folic Acid / Q000378:metabolism; D006710:Homocysteine / Q000378:metabolism; D006801:Humans; D002955:Leucovorin / Q000378:metabolism; D001523:Mental Disorders / Q000378:metabolism*; D008715:Methionine / Q000378:metabolism; D008716:Methionine Adenosyltransferase / Q000378:metabolism; D008745:Methylation; D012436:S-Adenosylmethionine / Q000378:metabolism; D013763:Tetrahydrofolates / Q000378:metabolism
chemical_list: D013763:Tetrahydrofolates; D006710:Homocysteine; D012436:S-Adenosylmethionine; D005492:Folic Acid; D008715:Methionine; D008716:Methionine Adenosyltransferase; D002955:Leucovorin