title: Effect of season and artificial photoperiod on levels of estradiol-17beta and estrone in blood serum of stallions.
mesh_terms: D000818:Animals; D004958:Estradiol / Q000097:blood*; D004970:Estrone / Q000097:blood*; D006736:Horses / Q000097:blood*; D008027:Light; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D012621:Seasons; D013739:Testosterone / Q000097:blood
chemical_list: D004970:Estrone; D013739:Testosterone; D004958:Estradiol; D007986:Luteinizing Hormone