title: Circulating levels of oestradiol-17beta during early pregnancy in the Alaskan fur seal showing an oestrogen surge preceding implantation.
mesh_terms: D000413:Alaska; D000818:Animals; D010872:Caniformia / Q000502:physiology*; D003338:Corpus Luteum; D010064:Embryo Implantation; D004958:Estradiol / Q000097:blood*; D004964:Estriol / Q000097:blood; D004970:Estrone / Q000097:blood; D005260:Female; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000097:blood; D012621:Seasons
chemical_list: D004970:Estrone; D011374:Progesterone; D004958:Estradiol; D004964:Estriol