title: [Carcadian variations of plasma delta4-androstenedione in normal and castrated adult males].
abstract: The plasma concentration of delta4-androstenedione has been assayed by a radioimmunological method, preceded by chromatographic purfication, in 11 normal adult and 4 adult castrated males at various times of day. The circadian variations observed are critically evaluated.
mesh_terms: D000328:Adult; D000735:Androstenedione / Q000097:blood*; D002369:Castration; D002940:Circadian Rhythm; D006801:Humans; D008297:Male; D011863:Radioimmunoassay; D012016:Reference Values
chemical_list: D000735:Androstenedione