Direct analysis of  18 O in glucose by mass spectrometry.
D005947:Glucose / Q000032:analysis*; D006601:Hexoses / Q000032:analysis; D013058:Mass Spectrometry; D010100:Oxygen / Q000032:analysis*; D010103:Oxygen Isotopes
D006601:Hexoses; D010103:Oxygen Isotopes; D005947:Glucose; D010100:Oxygen