title: The tubero-infundibular neuron system: a component of the photoperiodic control mechanism of the white-crowned sparrow, Zonotrichia leucophrys gambelii.
mesh_terms: D000818:Animals; D001683:Biological Clocks; D001717:Birds / Q000502:physiology*; D004564:Electrocoagulation; D006062:Gonadotropins; D007031:Hypothalamus / Q000166:cytology / Q000502:physiology*; D008027:Light; D008297:Male; D009474:Neurons / Q000502:physiology*; D009489:Neurosecretion; D009929:Organ Size; D013238:Stereotaxic Techniques; D013737:Testis / Q000254:growth & development*
chemical_list: D006062:Gonadotropins