title: Pyrrolizidine alkaloids. The biosynthesis of senecic acid.
mesh_terms: D000470:Alkaloids / Q000096:biosynthesis; D002247:Carbon Isotopes; D002776:Cholestanes; D006571:Heterocyclic Compounds; D007532:Isoleucine / Q000378:metabolism; D010084:Oxidation-Reduction; D010126:Ozone; D010777:Photochemistry; D010947:Plants, Toxic; D011763:Pyrrolizidine Alkaloids / Q000096:biosynthesis; D012674:Senecio / Q000378:metabolism; D013912:Threonine / Q000378:metabolism
chemical_list: D000470:Alkaloids; D002247:Carbon Isotopes; D002776:Cholestanes; D006571:Heterocyclic Compounds; D011763:Pyrrolizidine Alkaloids; D007532:Isoleucine; D013912:Threonine; D010126:Ozone