title: Concentrations of plasma testosterone in normal men during sleep.
mesh_terms: D000328:Adult; D002940:Circadian Rhythm; D004569:Electroencephalography; D006801:Humans; D008297:Male; D008875:Middle Aged; D010413:Penis / Q000502:physiology; D011485:Protein Binding; D012890:Sleep; D012895:Sleep, REM; D013739:Testosterone / Q000097:blood* / Q000502:physiology
chemical_list: D013739:Testosterone