title: The urinary excretion of 4-hydroxy-3-methoxy mandelic acid in the elderly.
mesh_terms: D000311:Adrenal Glands / Q000502:physiology; D000368:Aged; D000375:Aging; D004837:Epinephrine / Q000378:metabolism; D005260:Female; D006801:Humans; D008297:Male; D008333:Mandelic Acids / Q000652:urine*; D009638:Norepinephrine / Q000378:metabolism; D012737:Sex Factors; D013564:Sympathetic Nervous System / Q000502:physiology
chemical_list: D008333:Mandelic Acids; D009638:Norepinephrine; D004837:Epinephrine