title: The effects of castration on plasma LH levels in photosensitive and photorefractory canaries (Serinus canarius).
mesh_terms: D000818:Animals; D002171:Canaries / Q000502:physiology*; D002369:Castration; D002940:Circadian Rhythm; D007030:Hypothalamo-Hypophyseal System / Q000502:physiology; D008027:Light; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D013737:Testis / Q000502:physiology
chemical_list: D007986:Luteinizing Hormone