title: The precursors of nicotinic acid in bacteria.
mesh_terms: D000630:Aminopterin / Q000494:pharmacology; D001419:Bacteria / Q000378:metabolism*; D002247:Carbon Isotopes; D003013:Clostridium / Q000378:metabolism; D004926:Escherichia coli / Q000378:metabolism; D005990:Glycerol / Q000378:metabolism; D009169:Mycobacterium tuberculosis / Q000378:metabolism; D009539:Nicotinic Acids / Q000096:biosynthesis*
chemical_list: D002247:Carbon Isotopes; D009539:Nicotinic Acids; D000630:Aminopterin; D005990:Glycerol