title: Biological methylation. Its nature and scope.
mesh_terms: D001419:Bacteria / Q000378:metabolism; D006207:Half-Life; D008628:Mercury / Q000378:metabolism*; D008745:Methylation; D008767:Methylmercury Compounds / Q000378:metabolism; D009942:Organometallic Compounds / Q000378:metabolism*; D014805:Vitamin B 12
chemical_list: D008767:Methylmercury Compounds; D009942:Organometallic Compounds; D008628:Mercury; D014805:Vitamin B 12