title: Effects of blinding and pinealectomy on diurnal variations in plasma testosterone.
mesh_terms: D000818:Animals; D001835:Body Weight; D002940:Circadian Rhythm; D003624:Darkness; D008297:Male; D009929:Organ Size; D010870:Pineal Gland / Q000502:physiology*; D010902:Pituitary Gland / Q000033:anatomy & histology; D051381:Rats; D012683:Sensory Deprivation; D013737:Testis / Q000033:anatomy & histology; D013739:Testosterone / Q000097:blood*
chemical_list: D013739:Testosterone