Circadian rhythm of 3-metoxy-4-hydroxy-mandelic acid (VMA) excretion in man, influenced by changing conditions of illumination.
D000328:Adult; D002940:Circadian Rhythm; D003624:Darkness; D006801:Humans; D008027:Light; D008333:Mandelic Acids / Q000652:urine*
D008333:Mandelic Acids