title: Testosterone treatment blocks the termination of the gonadal photorefractory condition in white-throated sparrows maintained on short days.
mesh_terms: D000818:Animals; D001683:Biological Clocks / Q000187:drug effects*; D001717:Birds / Q000502:physiology*; D008027:Light; D008297:Male; D009043:Motor Activity / Q000187:drug effects; D013737:Testis / Q000033:anatomy & histology / Q000502:physiology*; D013739:Testosterone / Q000097:blood / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D013739:Testosterone