title: Diurnal variation of plasma testosterone and cortisol.
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D002940:Circadian Rhythm; D006801:Humans; D006854:Hydrocortisone / Q000097:blood*; D008297:Male; D013739:Testosterone / Q000097:blood*
chemical_list: D013739:Testosterone; D006854:Hydrocortisone