title: A note on four-hour excretion of estrone and estradiol-17  in the urine of the hen.
mesh_terms: D000818:Animals; D002645:Chickens / Q000502:physiology*; D004958:Estradiol / Q000652:urine*; D004970:Estrone / Q000652:urine*; D005260:Female; D010060:Ovulation; D013997:Time Factors
chemical_list: D004970:Estrone; D004958:Estradiol