title: Circadian variations in plasma 3':5'-cyclic adenosine monophosphate and 3':5'-cyclic guanosine monophosphate of normal adults.
mesh_terms: D000328:Adult; D002940:Circadian Rhythm; D000242:Cyclic AMP / Q000097:blood*; D006152:Cyclic GMP / Q000097:blood*; D006801:Humans; D008297:Male; D013997:Time Factors
chemical_list: D000242:Cyclic AMP; D006152:Cyclic GMP