title: Correlate uterine microscopy and hormone levels in cyclic sows.
mesh_terms: D000818:Animals; D001706:Biopsy; D004717:Endometrium / Q000166:cytology*; D004958:Estradiol / Q000097:blood*; D004971:Estrus; D005260:Female; D008854:Microscopy, Electron / Q000379:methods; D008855:Microscopy, Electron, Scanning; D008871:Microvilli / Q000648:ultrastructure; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D013552:Swine / Q000502:physiology*; D014599:Uterus / Q000166:cytology*
chemical_list: D011374:Progesterone; D004958:Estradiol