title: Plasma and pituitary luteinizing hormone in intact and castrated tree sparrows (Spizella arborea) during a photoinduced gonadal cycle.
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D001717:Birds / Q000502:physiology*; D002369:Castration; D005260:Female; D007030:Hypothalamo-Hypophyseal System / Q000502:physiology; D008027:Light; D007986:Luteinizing Hormone / Q000097:blood / Q000378:metabolism*; D008297:Male; D009929:Organ Size; D010053:Ovary / Q000033:anatomy & histology / Q000502:physiology*; D010775:Photic Stimulation; D010902:Pituitary Gland / Q000378:metabolism*; D011863:Radioimmunoassay; D012621:Seasons; D013737:Testis / Q000033:anatomy & histology / Q000502:physiology*; D013997:Time Factors
chemical_list: D007986:Luteinizing Hormone