Cortisol is secreted episodically by normal man.
D015065:17-Hydroxycorticosteroids / Q000652:urine; D000311:Adrenal Glands / Q000378:metabolism; D000328:Adult; D002247:Carbon Isotopes; D002490:Central Nervous System / Q000502:physiology; D002854:Chromatography, Paper; D002940:Circadian Rhythm; D006801:Humans; D006854:Hydrocortisone / Q000097:blood / Q000378:metabolism*; D008297:Male; D010507:Periodicity; D011485:Protein Binding; D012890:Sleep; D012895:Sleep, REM; D014316:Tritium
D015065:17-Hydroxycorticosteroids; D002247:Carbon Isotopes; D014316:Tritium; D006854:Hydrocortisone